Aidensmom12
Aquarium Advice Newbie
I have a 20 gallon tank with 4 gold fish. My mom recently bought a snail to put in the tank to help keep it clean. I just read online that the snail could be giving them parasites that's causing my one gold gold fish to start turring black. He pretty much turned completely black besides his face. He is my sons favorite and we had him for a year now and never had this problem some please tell me what to do?!?!