Right now my 75 holds a 10 inch venny pike, 8 inch jack dempsey that is forsale for $10, and a convict that is part of a breeding pair but not playing nice in the other tank right now. My 46 growout contains a 7 inch florida gar, and 6 inch rainbow wolf fish, 2 small jags, and a 3 inch jack dempsey. My 10 gallon has a 3 inch silver arowana