I have never had a "nice" dwarf blue gourami. Never did any harm but would lunge towards other tank mates. I have kept one to 5 at a time in a tank with the same results.

My experience with Dwarf Gouramis is that the males are impossible to keep more than 1 of. And even if you keep one or more females with your male, he will harass them to death as well.

My only success was in keeping just one male in a community tank.

If you wanted more than one of these fish, you could probably keep all females, but since they are rather pale in coloration, most shops don't bother keeping them.

I have three powder blue dwarfs (male) in a 72 gallon tank (along with other gouramis) and have found if given enough floating plant areas, they've got enough territory to stake out their own piece.

Another dwarf gourami that is less aggressive (along with sunsets that I can rarely find around me anymore!) are honey gouramis. They are really very peaceful.

I kept these wonderful fishes before as well once upon a time. Like bettas they are anabantids or "labyrinth" fishes which need to get to the surface to suplement their oxygen and also like bettas the male builds a bubblenest. I had been keeping one male and two females in a twentynine gallon tank with waterlilies and other various sorts of plants. I'd once kept other fish in there with them but decided that if they had a little more privacy they might breed and guess what? I was right. The male aggressed the larger female which in turn aggressed the smaller female. A tight little pecking order. One day i found that my male had got himself stuck between the glass and a large rock and had accidently drowned himself. The most amazing thing happened after that. The larger female started to gradually change color from her usual drab attire to something more colorful and her fins started growing larger. She changed gender! Later she'd gone on to breed with the smaller female and after having previously been a mother was soon the father of a new brood. Nature really is amazing!

I didn't know gouramis could be hermaphrodites. Hmmmmmmm.

Thanks for all your comments. I guess I'll give them a few more days and see how they behave before I decide what to do with them.

I have two males of the Dwarf Gouramis. They are somewhat of blue/purple. One of them is more of a beautiful purple while the other is more of a blue. They get along great with each othere and there are currently no floating plants at the top of the water. Their current tankmates are 10 Tiger Barbs, 6 platies, and 2 Striped Raphael catfishes, all in the 30 gallons tank. I have a short video submitted, but you can barely see some of the fishes, since they all are around sumwhere. The video was taken with my PC Cam and do not be fooled by the quality of the video. The tank and plants are not bright as shown in the video, meaning the lighting in the tank is perfect, despite of how the cam recorded it.

Here is a link that might be useful: Click here to view my fish tank!