anyone got any ideas what to do about a bubble eye fish that is upside down? He started off floating upside down on the surface, but now has started to sink! Help me. I don't think he is able to feed and I think hes starving. There is another fish in the tank and he is fine.

? some fish go on their back and need help going right side up again. like my cory 4 example. and i bet ur fish cant eat because hes upsidown
, i m sorry that he has passed away