anyone know the answer to this one . I have a pair of black clowns ,though the one I am writing about has some orange on it,and it is always swimming at the surface sometimes with its dorsal fin out the water like a shark. It never seems to go down in the tank passed half way, and because they stay together, this means the other clown stays at the top. I did wonder if it was a swimbladder problem maybe to do with diet or somthing but it is always swimming upright and feeding well and is a really nice fish in great condition.
Any suggestions would be welcome
Any suggestions would be welcome

