how about make your tank a saltwater tank and keep fuzzy dwarf lionfish! these guys are really really cool but if you want to have a freshwater setup go with either a community of schools of tetras and cories and such...but if you want aggressors go with a CA/SA American Cichlids Community....with yanoe Green Terror,Jack Dempsey,Black or Pink Convicts,Severums....but dont go with any of the bigger species of Cichlids as they may need around 120+ gallons so ya noe these are just some of the small species of cichlids or theirs the dwarf cichlids like the B. rams cichlids.Or if your a catfish person go with a bullhead catfish or alot of banjo catfish...these lil bugger can bury themselves like mad!! =]