Originally Posted by sonflowerjoela
I love gourami's also. Just want them to all get along. Do you have a mixed tank of Gourami's?
I had a mixed tank of gouramis. They kept to themselves (I had one male in each tank). They do better if you have a female with the male, not as lonely (I have only seen female gouramis for sale online and at walmart sadly). Although that was the Powdered Dwarf Gourami. They were blue. When I tried the Sunset Gourami he was a bit more aggressive. The Dwarf species seem to keep more to themselves. If you give them enough space and only have one male they do fine. Maybe throw in a female or two for peace keeping.
This is in the fish profiles:
Both shy and territorial, this fish can be maintained in a larger community aquarium with peaceful and quiet tankmates but usually not other gourami or active, boisterous fish.
Males are territorial with other males. Sometimes other brightly-coloured fish will cause this fish to become aggressive. Should be maintained in sexed pairs only.
Read more: Dwarf Gourami (Trichogaster lalius) Profile
If you are thinking about the dwarf gourami I would really read that page I just linked over really well.
I had two bright mollies in the tank with it (they were longer and about the same size and kept to themselves) and they never fought.
The reason I don't have them anymore is because I was worried for their health, my water is harder than they like it and eventually one start spazzing so I returned them. Byron had suggested to me that water that is good for mollies usually isn't good for the gouramis. Live bearers like hard water while the gouramis like soft to moderately hard water. I love those fish though, one day I will have them again :).
That will be the main thing deciding your stock, what kind of water you have. I would really look at all of that information so you can see what is safe to keep in your tank without having to go out of your way to fill it up.