Angler;3344858; said:A GT will be fine in that tank for life. They love feeders and readily eat everything else.
If I were to set up a 55 pred tank, Iwould get a couple Gulper Cats. They dont fit your criteria because they arent active.
A black belt will not do fine in a 55g. They get as large as oscars also they are not predatory. If it were me i would go with some bichirs, maybe 2 senegals and 1 delhezi.paopanlilio;3282028; said:get a 75 and get o like most of the other guys said
if its not applicable go for a gt or a black belt would also do fine a 55