Hi to all,

Recently, I've noticed greenish, transparent stuff on the body of my cardinal tetras. It seems to be spreading and i'm not sure if its fungus or parasites.

My tank is a 6ft planted tank with about 100 cardinal, 20 pencil fish, 3
discus, abt 6 cory and some otos. The greenish stuff only affect the cardinals so far.

Anyone has come across such a situation? Any advice on how to cure the fishes?

Thanks in advance!