{"id":6669,"date":"2022-11-05T12:22:57","date_gmt":"2022-11-05T12:22:57","guid":{"rendered":"https:\/\/keepingcatfish.com\/?p=6669"},"modified":"2023-11-05T14:28:39","modified_gmt":"2023-11-05T14:28:39","slug":"corydoras-behavior","status":"publish","type":"post","link":"https:\/\/keepingcatfish.com\/corydoras-behavior\/","title":{"rendered":"Odd Corydoras Behavior &#038; Stress Explained (Full Guide)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6669\" class=\"elementor elementor-6669\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5572d8c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5572d8c\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ee074f8\" data-id=\"ee074f8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-20088b7 elementor-widget elementor-widget-text-editor\" data-id=\"20088b7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.17.0 - 01-11-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>Cory catfish are lively fish and certainly amazing fish. But sometimes they can seem a little bit <em>too<\/em> lively or weird. Well, in this article I&#8217;m going to discuss why your cory catfish might be swimming like crazy through your tank.<\/p><p>I have also listed a couple of other types of odd cory catfish swimming behavior that you might recognize.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5bec381 elementor-widget elementor-widget-heading\" data-id=\"5bec381\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.17.0 - 01-11-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">Why is my cory catfish swimming like crazy?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5a49b0 elementor-widget elementor-widget-image\" data-id=\"f5a49b0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.17.0 - 01-11-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/05\/15439449509_48c269bb13_c.jpg\" class=\"attachment-large size-large wp-image-5234\" alt=\"\" srcset=\"https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/05\/15439449509_48c269bb13_c.jpg 800w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/05\/15439449509_48c269bb13_c-300x225.jpg 300w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/05\/15439449509_48c269bb13_c-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Corydoras panda Photo by <a href=\"https:\/\/flic.kr\/p\/pwkdrk\" rel=\"nofollow noopener\" target=\"_blank\">Dornenwolf<\/a><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a0bd32 elementor-widget elementor-widget-text-editor\" data-id=\"0a0bd32\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Cory catfish are quite calme fish that like to do everything at their own pace. So, it can be a worrying sight when your cory catfish are swimming more and faster than usual through your tank. It&#8217;s important to take note of this behavior and carefully analyze it so that you can find the cause. But here&#8217;s a quick answer on why cory catfish can swim like crazy.<\/p><p><strong>If you notice your cory catfish is swimming more actively than usual, it&#8217;s often because of excitement and is thus innocent. However, if you notice your catfish breathing fast or swimming sideways at the same time, this is caused by either a disease, bad water parameters or stress.<\/strong><\/p><p>There are quite some reasons that cause this excitement or more energetic behavior of cory catfish. As stated above, most of the time behavior listed here is innocent and will only become a problem if other unnatural behavior is apparent at the same time.<\/p><p>Testing your water parameters using a <a href=\"https:\/\/www.amazon.com\/JNW-Direct-Aquarium-Strips-Strip\/dp\/B08CNDVDY6?crid=1LMZVA34I1GD0&amp;keywords=test%2Bkit%2Bfor%2Baquarium%2Bfish%2Btank&amp;qid=1694010530&amp;sprefix=test%2Bkit%2Caps%2C172&amp;sr=8-17&amp;th=1&amp;linkCode=ll1&amp;tag=keepingcatfish-20&amp;linkId=701d1264806ec24598b402ec99850225&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noopener\">test kit<\/a> is crucial to ensure\u00a0bad water parameters\u00a0aren&#8217;t the cause.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a94f7cc elementor-widget elementor-widget-heading\" data-id=\"a94f7cc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. New tank setup<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9880fb7 elementor-widget elementor-widget-image\" data-id=\"9880fb7\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"762\" src=\"https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/01\/tank.-compressed1-1024x762.jpg\" class=\"attachment-large size-large wp-image-2978\" alt=\"\" srcset=\"https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/01\/tank.-compressed1-1024x762.jpg 1024w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/01\/tank.-compressed1-300x223.jpg 300w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/01\/tank.-compressed1-768x572.jpg 768w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/01\/tank.-compressed1-1536x1144.jpg 1536w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2022\/01\/tank.-compressed1.jpg 1550w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Photo by <a href=\"https:\/\/www.instagram.com\/p\/CXwbIUZopid\/\" rel=\"nofollow noopener\" target=\"_blank\">@simple_fins on Instagram\n<\/a><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7512f46 elementor-widget elementor-widget-text-editor\" data-id=\"7512f46\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>As cory catfish are very lively fish, it&#8217;s completely normal to react to changes by swimming more actively than normal. Consider this a form of healthy stress.<\/p><p>If you buy cory catfish and put them in your tank, it&#8217;s also completely normal for them to swim abnormally active for some time.<\/p><p>Apart from changing your whole tank setup, this can also mean adding <a href=\"https:\/\/keepingcatfish.com\/best-plants-for-cory-catfish\/\">new plants<\/a> or reshaping the tank to which Corydoras might react.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-565b4da elementor-widget elementor-widget-heading\" data-id=\"565b4da\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. New fish added<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a36dd2 elementor-widget elementor-widget-text-editor\" data-id=\"8a36dd2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>New fish added to the tank can be a source of stress or excitement for cory catfish. Although they&#8217;re generally not that interested in their tank mates, cory catfish can react to it by being more active.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e7325a3 elementor-widget elementor-widget-heading\" data-id=\"e7325a3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Breeding behavior<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9ffeca7 elementor-widget elementor-widget-image\" data-id=\"9ffeca7\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/keepingcatfish.com\/wp-content\/uploads\/2021\/12\/spawning-of-corydoras-gee765186b_1280-1024x682.jpg\" class=\"attachment-large size-large wp-image-299\" alt=\"\" srcset=\"https:\/\/keepingcatfish.com\/wp-content\/uploads\/2021\/12\/spawning-of-corydoras-gee765186b_1280-1024x682.jpg 1024w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2021\/12\/spawning-of-corydoras-gee765186b_1280-300x200.jpg 300w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2021\/12\/spawning-of-corydoras-gee765186b_1280-768x512.jpg 768w, https:\/\/keepingcatfish.com\/wp-content\/uploads\/2021\/12\/spawning-of-corydoras-gee765186b_1280.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77e8bf2 elementor-widget elementor-widget-text-editor\" data-id=\"77e8bf2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>You might not have thought about this option, but it could be very well that your cory catfish are actually spawning. Breeding behavior is often incentivized by colder water changes, changes in the <a href=\"https:\/\/keepingcatfish.com\/cory-catfish-diet\">cory catfish&#8217; diet<\/a> or weather conditions.<\/p><p><span style=\"font-style: inherit; font-weight: inherit;\">The following cory catfish species spawn very easily and there&#8217;s a good chance they breed in a community tank:<\/span><\/p><ul><li><span style=\"font-style: inherit; font-weight: inherit;\">Bronze cory catfish<\/span><\/li><li><span style=\"font-style: inherit; font-weight: inherit;\">Albino cory catfish<\/span><\/li><li><span style=\"font-style: inherit; font-weight: inherit;\">Peppered cory catfish<\/span><\/li><\/ul><p><span style=\"font-style: inherit; font-weight: inherit;\">Typically, cories will swim against the glass up and down repeatedly when they are spawning. Here&#8217;s a video on what it looks like:\u00a0<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8bf3388 elementor-widget elementor-widget-text-editor\" data-id=\"8bf3388\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p style=\"font-size: 16px; font-style: normal; font-weight: 400;\"><span style=\"font-style: inherit; font-weight: inherit;\">So, if you notice\u00a0<\/span><a style=\"background-color: #ffffff; font-style: inherit; font-weight: inherit;\" href=\"https:\/\/keepingcatfish.com\/cory-catfish-eggs\/\">white eggs<\/a><span style=\"font-style: inherit; font-weight: inherit;\">\u00a0against the glass, you can be sure your cories have been busy :).<\/span><\/p><p style=\"font-size: 16px; font-style: normal; font-weight: 400;\"><span style=\"font-style: inherit; font-weight: inherit;\">Read more about\u00a0<\/span><a style=\"background-color: #ffffff; font-style: inherit; font-weight: inherit;\" href=\"https:\/\/keepingcatfish.com\/breeding-cory-catfish\/\">breeding cory catfish<\/a><span style=\"font-style: inherit; font-weight: inherit;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-087cf60 elementor-widget elementor-widget-heading\" data-id=\"087cf60\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Water temperature fluctuations<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de04b74 elementor-widget elementor-widget-text-editor\" data-id=\"de04b74\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Cory catfish will react to <a href=\"https:\/\/keepingcatfish.com\/water-temperature-cory-catfish\/\">water temperature<\/a> fluctuations by changing their demeanor and mainly when the water cools down, Corydoras get excited.<\/p><p>Because cory catfish are hardy fish, this is nothing to worry about. In fact, temperature fluctuations are entirely normal in nature, too.\u00a0<\/p><p>When the temperature drops, this is an indicator for cory catfish that the rainy season has begun and that the breeding season has started. As pointed out, cory catfish are more actively during this spawning process.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29f8b42 elementor-widget elementor-widget-heading\" data-id=\"29f8b42\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. Water changes<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ffcae11 elementor-widget elementor-widget-text-editor\" data-id=\"ffcae11\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>You might have noticed this with other fish species, too. When fresh, new water is added, cory catfish often get excited even when there is no temperature fluctuation.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d1d3674 elementor-widget elementor-widget-heading\" data-id=\"d1d3674\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Signs your cory catfish is stressed<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0338ab8 elementor-widget elementor-widget-text-editor\" data-id=\"0338ab8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Apart from your cory catfish swimming more actively than normal, it&#8217;s also to take a look at what it looks like when your fish are stressed. This ensures that your cory catfish stays in great health.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cfd8a5 elementor-widget elementor-widget-heading\" data-id=\"2cfd8a5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Hiding often \/ shyness<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12d23c1 elementor-widget elementor-widget-text-editor\" data-id=\"12d23c1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Hiding isn&#8217;t natural behavior for cory catfish. Corydoras are normally lively fish that love to explore the tank. As we&#8217;ve discussed, it&#8217;s also not uncommon for these fish to swim against the glass or very actively upon changes.<\/p><p>It&#8217;s totally normal for cory catfish to hide sometimes, though. As they&#8217;re bottom-dwelling fish they are used to being prey animals.<\/p><p>If you have <a href=\"https:\/\/keepingcatfish.com\/corydoras-wild-habitat\/\">wild-caught cory catfish<\/a>, they will tend to hide more and be shyer.<\/p><p>Although contrary to what most would think, adding more covers like <a href=\"https:\/\/animals.mom.com\/importance-of-driftwood-in-aquariums-12202163.html\">driftwood<\/a>, stones, and most importantly, <a href=\"https:\/\/keepingcatfish.com\/best-plants-for-cory-catfish\/\">live plants<\/a>, makes your Corydoras more comfortable. This means that they&#8217;ll be less shy.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8c16af elementor-widget elementor-widget-heading\" data-id=\"f8c16af\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Passive behavior<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f63a57d elementor-widget elementor-widget-text-editor\" data-id=\"f63a57d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Cory catfish are fish that should swim and dig through the bottom of your tank.\u00a0<\/p><p>If you notice your cory catfish always sitting in the same spot, not moving a lot this is a clear sign that it&#8217;s stressed.<\/p><p>Test your water parameters using a\u00a0<a href=\"https:\/\/www.amazon.com\/JNW-Direct-Aquarium-Strips-Strip\/dp\/B08CNDVDY6?crid=1LMZVA34I1GD0&amp;keywords=test%2Bkit%2Bfor%2Baquarium%2Bfish%2Btank&amp;qid=1694010530&amp;sprefix=test%2Bkit%2Caps%2C172&amp;sr=8-17&amp;th=1&amp;linkCode=ll1&amp;tag=keepingcatfish-20&amp;linkId=701d1264806ec24598b402ec99850225&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noopener\">test kit<\/a>\u00a0to ensure this isn&#8217;t the cause.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e75c508 elementor-widget elementor-widget-heading\" data-id=\"e75c508\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Loss of color<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-baa4d84 elementor-widget elementor-widget-text-editor\" data-id=\"baa4d84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>When fish are stressed, they become paler and tend to lose some of their colors.<\/p><p>This is totally normal when you just added your cory catfish to their new tank. Being transported in a fish bag and going through these drastic changes is quite stressful. However, if you have your cory catfish for a while and see them turning white, it&#8217;s most likely sick or very stressed.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b25b46b elementor-widget elementor-widget-heading\" data-id=\"b25b46b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Keeping Corydoras not in groups<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e92fd80 elementor-widget elementor-widget-text-editor\" data-id=\"e92fd80\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Corydoras are fish that <strong>must<\/strong> be kept in groups. Unfortunately, many pet stores give wrong advice regarding this matter and only think about profit, not the well-being of your fish.<\/p><p>In their natural habitat, cory catfish live in shoals of sometimes thousands of specimens, so they can defend themselves against predators.\u00a0<\/p><p>Of course, it isn&#8217;t possible to keep thousands of cory catfish in your tank, but a group of 6 fish is about the minimum group size. This suits a 20-gallon tank. As a general rule, the bigger the group the better if your tank can handle it.<\/p><p>Important to note is that this means 6 or more Corydoras of the same type\/species. As a general rule, it&#8217;s better not to mix species.<\/p><p>Read more about how many cory catfish to keep in <a href=\"https:\/\/keepingcatfish.com\/how-many-cory-catfish\/\">this full guide on our website<\/a>.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b33187 elementor-widget elementor-widget-heading\" data-id=\"2b33187\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. Sickness sympthoms<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c40dc97 elementor-widget elementor-widget-text-editor\" data-id=\"c40dc97\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Sickness can be caused by long-term stress. Stress weakens the immune system, making the fish more subject to infections.<\/p><p>There are a lot of diseases all of which have different symptoms, but here are some of the most common symptoms to look out for. If not treated, this will lead to <a href=\"https:\/\/keepingcatfish.com\/cory-catfish-dying\/\">the death of your Corydoras<\/a>.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-96df13b elementor-widget elementor-widget-heading\" data-id=\"96df13b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQs in Corydoras behavior<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b4d5c27 elementor-widget elementor-widget-toggle\" data-id=\"b4d5c27\" data-element_type=\"widget\" data-widget_type=\"toggle.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.17.0 - 01-11-2023 *\/\n.elementor-toggle{text-align:left}.elementor-toggle .elementor-tab-title{font-weight:700;line-height:1;margin:0;padding:15px;border-bottom:1px solid #d5d8dc;cursor:pointer;outline:none}.elementor-toggle .elementor-tab-title .elementor-toggle-icon{display:inline-block;width:1em}.elementor-toggle .elementor-tab-title .elementor-toggle-icon svg{margin-inline-start:-5px;width:1em;height:1em}.elementor-toggle .elementor-tab-title .elementor-toggle-icon.elementor-toggle-icon-right{float:right;text-align:right}.elementor-toggle .elementor-tab-title .elementor-toggle-icon.elementor-toggle-icon-left{float:left;text-align:left}.elementor-toggle .elementor-tab-title .elementor-toggle-icon .elementor-toggle-icon-closed{display:block}.elementor-toggle .elementor-tab-title .elementor-toggle-icon .elementor-toggle-icon-opened{display:none}.elementor-toggle .elementor-tab-title.elementor-active{border-bottom:none}.elementor-toggle .elementor-tab-title.elementor-active .elementor-toggle-icon-closed{display:none}.elementor-toggle .elementor-tab-title.elementor-active .elementor-toggle-icon-opened{display:block}.elementor-toggle .elementor-tab-content{padding:15px;border-bottom:1px solid #d5d8dc;display:none}@media (max-width:767px){.elementor-toggle .elementor-tab-title{padding:12px}.elementor-toggle .elementor-tab-content{padding:12px 10px}}.e-con-inner>.elementor-widget-toggle,.e-con>.elementor-widget-toggle{width:var(--container-widget-width);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-toggle\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1891\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1891\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Why is my cory catfish swimming eretically?\u200b<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1891\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1891\">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1892\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1892\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Why is my cory catfish swimming up and down?\u200b<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1892\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1892\"><p>It&#8217;s a quite common sight: cory catfish swimming up and down their tank to the surface. If you don&#8217;t have a lot of experience with cory catfish, this might seem concerning.<\/p><p><strong>It&#8217;s normal for cory catfish to swim up and down their tank. They do this to gulp for air and it&#8217;s nothing to worry about. However, if you see your cory catfish gulping too much at the surface, this can become a problem.<\/strong><\/p><p>In normal circumstances, a cory catfish should gulp for air every few minutes. If you see your fish constantly hanging around at the top of your tank, this means it has an oxygen deficit and it might be dying. Consult our full guide on <a href=\"https:\/\/keepingcatfish.com\/cory-catfish-dying\/\">how to save a dying Corydoras here<\/a>.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1893\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1893\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Why is my cory catfish swimming upside down\/sideways?\u200b<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1893\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1893\"><p><strong>If your cory catfish is swimming upside down or sideways, it has a swim bladder problem. A swim bladder can be caused by a disease, bad diet, lower water temperature, or infections like dropsy.<\/strong><\/p><p>If you see your cory catfish swimming sideways or upside down, make sure to research all further symptoms to find out the cause.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1894\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1894\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><i class=\"fas fa-caret-right\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><i class=\"elementor-toggle-icon-opened fas fa-caret-up\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Why does my cory catfish swim sideways?\u200b<\/a>\n\t\t\t\t\t<\/h3>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1894\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1894\">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31b2654 elementor-widget elementor-widget-text-editor\" data-id=\"31b2654\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<strong>If your cory catfish is swimming upside down or sideways, it has a swim bladder problem. A swim bladder can be caused by a disease, bad diet, lower water temperature, or infections like dropsy.<\/strong>\n\nIf you see your cory catfish swimming sideways or upside down, make sure to research all further symptoms to find out the cause.\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0daf2e5 elementor-widget elementor-widget-heading\" data-id=\"0daf2e5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-23e21df elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"23e21df\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5d5916d\" data-id=\"5d5916d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1461d51 elementor-widget elementor-widget-text-editor\" data-id=\"1461d51\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>If your cory catfish is swimming crazy or faster than usual, it can be for several reasons.<\/p><p>It&#8217;s important to note that this behavior is often innocent, and because of the playful nature of these fish.<\/p><p>Here are the most likely reasons your Corydoras are swimming more actively than normal:<\/p><ul><li>New tank setup<\/li><li>New fish added<\/li><li>Breeding behavior<\/li><li>Water temperature fluctuations<\/li><li>Water change<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Cory catfish are lively fish and certainly amazing fish. But sometimes they can seem a little bit too lively or weird. Well, in this article I&#8217;m going to discuss why your cory catfish might be swimming like crazy through your tank. I have also listed a couple of other types of odd cory catfish swimming &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/keepingcatfish.com\/corydoras-behavior\/\"> <span class=\"screen-reader-text\">Odd Corydoras Behavior &#038; Stress Explained (Full Guide)<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":8721,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[26],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Odd Corydoras Behavior &amp; Stress Explained (Full Guide) | Keeping Catfish<\/title>\n<meta name=\"description\" content=\"Analyse the behavior of your Corydoras catfish &amp; identify possible problems. 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