Karen B. Posted December 21, 2020 Share Posted December 21, 2020 I added 8 false julii corydoras to my 20 gallons on saturday. They are the only fish in beside 2 nerite snails. The aquarium is cycled. They will not stop glass surfing all day long, or swimming around, no matter if the lights are on or off. They don’t stay on the ground and forage. The substrate is black flourite sand. Tank is planted. I just started the quarantine med trio treatment yesterday and today my water is cloudy but they were doing it the day before. I am dosing Prime every 48 hours and Stability everyday. My parameters are : pH 7.4 - 7.6 0/0/15 gh : 8-9 kh : 3-4 temp : 76.5 Link to comment Share on other sites More sharing options...
gardenman Posted December 21, 2020 Share Posted December 21, 2020 My panda corys do the same thing and have for years. I've always wondered if it's directional as they always do the front glass (north facing) and never the sides or back. Are they trying to migrate to the north? Lots of animals migrate each year, but I've never heard of vast herds of corys moving north through a river. The back glass is painted so maybe that's why they don't do the back, but the sides are clear. I'm sure it makes perfect sense if you're a cory, but it baffles us humans. It seems to be a relatively normal behavior for a cory though. Mine have done it for years. 2 Link to comment Share on other sites More sharing options...
Paul Posted December 21, 2020 Share Posted December 21, 2020 It’s perfectly natural behavior there’s nothing to worry about. 1 Link to comment Share on other sites More sharing options...
FrozenFins Posted December 21, 2020 Share Posted December 21, 2020 I had a corydora who did the same thing. I wouldn't worry about it as what @Paul mentioned its perfectly normal 1 Link to comment Share on other sites More sharing options...
Joey Posted December 21, 2020 Share Posted December 21, 2020 Yes ours do this as well. Both the false julli and the smudge tail pair. Although they do it less once they had settled in.🙂 1 Link to comment Share on other sites More sharing options...
Colu Posted December 21, 2020 Share Posted December 21, 2020 (edited) You shouldn't use ich x with seachem prime it sulfonate based it Edited December 21, 2020 by Colu Link to comment Share on other sites More sharing options...
Karen B. Posted December 21, 2020 Author Share Posted December 21, 2020 1 hour ago, Colu said: You shouldn't use ich x with seachem prime it sulfonate based it I don’t understand? Link to comment Share on other sites More sharing options...
Brandy Posted February 16, 2021 Share Posted February 16, 2021 Lol, having just bought corys in a school of 6 for the first time, I am seeing this and LOOOVING it. I also am very glad the search feature exists, and that this post was so well named that I could find it. Mine do forage some of the time and look like a little fleet of roombas. They also are absolutely fearless. This makes me very happy. I wish all fish were bold. I think I am developing a fish "type" that I love--"happy" and not fearful or reclusive. 1 Link to comment Share on other sites More sharing options...
Trish Posted February 16, 2021 Share Posted February 16, 2021 Another reason...mine start glass surfing when they are getting ready to spawn! 1 Link to comment Share on other sites More sharing options...
Brandy Posted February 16, 2021 Share Posted February 16, 2021 That I should be so lucky--I got them yesterday. I think their companions might have a feast, but I will keep my eyes open. 1 Link to comment Share on other sites More sharing options...
CorydorasEthan Posted February 16, 2021 Share Posted February 16, 2021 This is perfectly normal behavior with all types of Corydoras. They are usually just having fun, or sometimes they are even in breeding behavior (this is when the males will chase the females non-stop). 1 1 Link to comment Share on other sites More sharing options...
Celly Rasbora Posted February 16, 2021 Share Posted February 16, 2021 Your tank is beautiful. Link to comment Share on other sites More sharing options...
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