Does anyone know of anything that can cause sunken in eyes on an Oscar. I’ve been gone for two days and got a call that he was laying at the bottom of the tank and has a large hole on his head with black around the edges. It appeared suddenly so I don’t know if it’s from his usual random thrashing or HIH. Other than that his eyes are sunken further into his head as well and I cannot find anything about this. I started doing a water change and about 15 minutes into adding new water he is swimming erratically and sideways and then sinking to the bottom. I don’t notice a bloated swim bladder so I’m not sure what’s causing the swimming.
All parameters were normal besides nitrate which usually spikes until I do a water change. Took out the carbon filter. Any help appreciated
All parameters were normal besides nitrate which usually spikes until I do a water change. Took out the carbon filter. Any help appreciated
