Hey its been a while so I'll post an update. It was mechanical damage from them I guess having bashed the glass when they were first introduced and nervous. Its basically all cleared up and they're healthy and happy.
Hey everyone, I have had my Bosemani rainbow fishes for a couple weeks now and recently they started having weird white upper lips. Their behaviour is normal otherwise and the parameters of tank are 0 ammonia, 0 nitrite and 5 nitrate, I do weekly 50% water changes.
I put them into a salt bath +...