One of my 9 Glass Catfish looks fine to me but is swimming in circles. Do they tolerate salt well, or medications? I have him in a 2g hospital tank with filter, heater and aeration. He is now sometimes lying on his side, but was flashing at one point. I see no visible signs of parasites.
Ammonia: 0
Nitrite: 0
Nitrate: 25
debra