Fish_lover
Aquarium Advice Freak
- Joined
- Jun 6, 2013
- Messages
- 295
Did it come up suddenly ? Fish have been known to get something like an abscess, and if that is what this is, it will probably burst and drain some whitish pus and the fish will probably recover. If it is a tumour, might live with it some time, or might die, it's very hard to say.