It really depends on how big your tank is and what else is in there. I personally like the moonlight gouramis with the pearls, and my 3 spots get along with them also. I think that dwarfs will get picked on though. I have found that a gourami tank works well if you add a school of something to help distract their tempers. I have a school of dwarf neon rainbows, but a variety of larger tetras would work also.