One of my male danios has a hole in it's stomach. On one side it's theres a hole the other theres a thin layer of "skin". I'd have to say it's diease I'm wondering if theres any cure. I'll list the fish in my tank even though I don't think any of them did anything.
4 danios 2 german blue rams 2 white tipped tetras
2 plecos 1 yoyo loach 2 platys 5 neons
4 danios 2 german blue rams 2 white tipped tetras
2 plecos 1 yoyo loach 2 platys 5 neons