Something is wrong with Izzy, but I'm not sure what it is. She was in the 29, and doing fine and getting big, so we upgraded her to the 55. She's the smallest bichir in that tank, at around 10-11'', with the others ranging from 12'' to 14'', but we decided to do it because she was beating up the other half grown fish in the 29. She's a tough fish... Anyway, she's been getting a little bit of static from the other fish in this tank. Some tail and belly nipping, but on the outside she looks just fine. Her tail fin is split, but I've seen much worse. It isn't even red. But she's disoriented. She's swimming along the bottom, listing from left to right. She swims into the log, and tries to swim through it. I noticed this first on Friday night, and it's not getting any better. Checked the water and everything is fine... nitrates a bit high but nothing to be worried about. I treated that already. I've gotten no new fish so she wasn't exposed to anything.
Any ideas?
Any ideas?
It perked back up a few hours after I relocated the bully.