I currently have a 29 gallon with 3 ghost shrimp, and a dwarf gourami. My dwarf gourami is more aggressive than what I would perceive as normal. I want to add 6-9 tiger barb. I have heard that the tiger barbs will not bother other fish if they are in a big enough group, plus the fact that my gourami is fairly more aggressive than normal. I have not kept tiger barbs before, so I figured I would seek advice before adding them into the tank.