Cohen Posted July 29, 2021 Share Posted July 29, 2021 (edited) Hello, so I had just gotten some new julli corys and have noticed them being active in the day and night. But are they nocturnal? Edited July 29, 2021 by Cohen 1 Link to comment Share on other sites More sharing options...
Keeg Posted July 29, 2021 Share Posted July 29, 2021 Kind of, like a lot of fish species, they rest throughout the day and night in tiny naps. Corydoras are more active (I would say comfortable) at night but its not rare to see them venturing out in the day. Link to comment Share on other sites More sharing options...
Guppysnail Posted July 29, 2021 Share Posted July 29, 2021 Mine are incredibly active throughout the entire day always busy about something occasionally stopping for a brief nap but they never hide. I give them caves and hiding spots but never see them resting inside rather they use them as a playground. Link to comment Share on other sites More sharing options...
Odd Duck Posted July 29, 2021 Share Posted July 29, 2021 Mine are always out during the day, I see them out for a while after the tank lights go off, but I don’t see them out throughout the night. I’m a bit of an insomniac so I am sometimes seeing the tank at all hours during the night. Link to comment Share on other sites More sharing options...
Sandra the fish rookie Posted July 29, 2021 Share Posted July 29, 2021 My albino's zip around all day and night.. the peppered are a little more chilled but are active day and night.. I remember the first time I saw one "napping" I totally FREAKED! Thought it was dead.. so I went in and touched it.. it flew across the tank ... LOL.. I just LOVE Corydora's.. can't have a tank without them! Link to comment Share on other sites More sharing options...
Biotope Biologist Posted July 29, 2021 Share Posted July 29, 2021 (edited) Wow I am actually surprised at how little information there is on the internet about this. While Corydoras like most catfish are primarily active at night, they can be found in the wild swimming in massive schools at all hours of the day, like reverse cats. They have important schedules to adhere to and if they don't comb the South American river basins who will? Even fishbase.org is skimpy on any information on a very popular pet: https://www.fishbase.de/summary/Corydoras-julii.html Edited July 29, 2021 by Biotope Biologist checked fishbase too 2 Link to comment Share on other sites More sharing options...
Taco Playz Posted July 29, 2021 Share Posted July 29, 2021 I have so much hornwort in my tank that my cories are active all day but when I go to look at them they always move to the back of the tank. I guess they don't like me 😆 Link to comment Share on other sites More sharing options...
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