Hi ,ive rescued him 2 weeks ago and he is currently in quarantine of 60L with filter and oxigen. parameters are 0,0,10. During all this time he was happy and active but during the last 2 das he seems lethargic , spending alot of time on the bottom or just floating in the middle of the tank. He is eating and hes poop seems healthy, and i dont see any external signs of something wrong
What do you think?