I had six angle fish in my 75 gallon for the past year no problems. Then one developed hole in the head and died about two weeks ago. Now two more have bloated bellies and are almost dead and another has what looks like two bite marks on each side of his belly. I have the sick ones in isolation treating then with salt and antibiotics. last week I treated the tank with Metronidazle hoping that might help.
The strange part is I've have not added any new fish in months my water parameters are perfect and none of my other fish have problems, Clown Loaches, Bala Sharks and Gourami's.
The strange part is I've have not added any new fish in months my water parameters are perfect and none of my other fish have problems, Clown Loaches, Bala Sharks and Gourami's.