Shmowgen Posted June 3, 2021 Share Posted June 3, 2021 (edited) I have a Zebra danio that looks noticeably slimmer than my others (fish on the right). I was watching him today and I also noticed that he doesn't eat and he seems to be struggling to swim (ie he is nowhere near as active as the other ones). He has a buddy (fish on the left) that seems to stay close by him and sorta nudges him around as well. My water levels look good and all the other fish appear normal. Is he just old? Edited June 3, 2021 by Shmowgen Link to comment Share on other sites More sharing options...
Fish Folk Posted June 3, 2021 Share Posted June 3, 2021 If you’ve got a quarantine tank set up, you may consider treatment. Unless there’s anything obviously external, something may be eating away at his insides. If that gets into the tank... you could possibly see it spread. 1 Link to comment Share on other sites More sharing options...
Shmowgen Posted June 3, 2021 Author Share Posted June 3, 2021 Thanks for the response. I thought maybe he was just old? I'm trying not to jump to conclusions but I'm also not noticing some lighter spots on a few of the danios. They aren't bumps, as in, they don't stick out. Is this just discoloration or something else? I am also noticing the fish's buddy kinda swims the same way and isnt as active as the other danios. Link to comment Share on other sites More sharing options...
Colu Posted June 3, 2021 Share Posted June 3, 2021 What are your water parameters and have you add anything new to the tank Link to comment Share on other sites More sharing options...
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