Any tank that you think the fish can move around in comfortably at adult size. My 12 inch oscar does fine in his 55 gal. tank
10G=a pair of dwarf puffers, a malaysian leaf fish, a wasp fish, or even a dozen Burmese spineless eels (be cool with a few zebra danios, they are only 2 1/2"-3" long).mudskipper said:to awnser your question, no way! I would only use a 10 gallon as a fry tank, small fish hosptal tank, feeder tank or livebearer breeder.
