I have a 45 gal. tall that's almost two months running. Most of the fish I want are schooling, so I'd like one "specimen" fish who's a little larger than the rummy-noses I already have. I just got a (hopefully) female gold gourami to fill this role, but now I'm reading that they should be kept in multiples. Anybody have ideas on a fish that's happy without same-species tank mates? Thanks!