I am not a big fan of venting. folks try to do it with Oscars all the time and always ends up being a guess. in the mean time poor fishes arse stuck in the air.besides looking at a fishes anus I have no ideal. was that the star ship Enterprise that just went by? Thought Klingon's hated fish. sorry being an assI am not a big fan of venting. folks try to do it with Oscars all the time and always ends up being a guess. in the mean time poor fishes arse stuck in the air.