I have 2 black goldfish, 4 goldfish, 4 platies, 2 male guppies, 2 dwarf frogs, 2 catfish and 2 irridescent sharks (I know). Tank is two years old.
I need a test kit, will get one. I have live plants in there as well.
He seems okay a good part of the time, but the last few days, he doesn't...