I have three tangs in my 120g. A Blue Hippo, a Yellow, and a Sail Fin. I have had them for months together, with no issues, and no newly introduced fish. Today I noticed that my Sail Fin was missing both tail barbs, and has some damage to its left side. This isnt something that I would miss, so I know it had to happen today. Anyone have any input on what I should do? It seems fine in that it is not pale, is swimming fine, eats well, and doesn't seem to have any issues with the other fish in the tank. Its acting completely normal.
Thanks in advance.
Thanks in advance.