I've noticed that my only red minor serpae tetra is a bit aggressive with one of my 2 dwarf gouramis. I just ignored it thinking it would turn out ok, but today i noticed that one of my dwarf gouramis anal fin has a big chunk missing, im guessing it was the red minor tetra. For now i've isolated it. Do any of you guys have red minor tetras and dwarf gouramis in a tank together?

What size is the tank? If you don't know for sure, I'd guess the Gourami. The one I have, has killed 3 others. They are pretty aggresive toward each other and it makes it worse in smaller tanks where they can't get away from each other.

I'd agree that the gourami is the culprit. I have one of those tetras in my tank and it doesnt bother anybody ever. Gouramis can be aggressive toward eachother and can cause a lot of problems as jrman has stated.

you guys are right, i observed them closely for a couple of days.
:(

Yeah, My flame dwarfs got so bad I had to separate them. You would figure in 30 gallons they would be fine. It took them a day to start tearing at each other. So I put them in two separate 3 gallons. Now I just have to figure out what to do with them..