Ok, so I have two purple fire fish in my tank. One of them is fine but the other one has two curls coming out from under his gill and fin. He had it a few days ago but it fell off (I think), when I saw him after it was gone I could see a little hole where it was. Today I saw him and again he had it but this time it was two of them. Any idea what they might be and should I be worried about it?
