Nice tank there, Blue Gourami.
As pictures don't do justice, I keep assuming your hex tank is very large. :?
If it's that large, I'd put altums in there as long as height of tank is 24 inches.
You seem to love the gouramis very much.
forum community dedicated to tropical fish owners and enthusiasts. Come join the discussion about species,breeding, health, behavior, aquariums, adopting, care, classifieds, and more! Open to fish, plants and reptiles living in freshwater or saltwater environments.