Callisto405
Fish Fanatic
I have a black neon that has 1 open red gill and looks inflamed, fish also looks dull looking. It's been the same for 3 days. the fish won't eat either. It's been in a quarantine tank since I bought it. It was the only one left in the store and since I had 2 at home already I thought I would rescue it. I looked at it in the store but I didn't notice the open red gill or I wouldn't have bought it. Any thoughts on what this is?