I have one red flame dwarf gourami in a 5 gal hex tank. If the one inch per gal rule is true then I should have 2.5 in of fish left, correct? Right now I'm thinking barb (black ruby or tiger) or another small gourami (dwarf or honey). I've also heard they do well with loaches and mollies. I know gourami are carnivores so I'm also wondering how they handle snails. If anyone has experience with this species or advice it would be greatly appreciated. Thanks!