Some people consider all gouramies in the colisa genus to be 'dwarf'. However, the dwarf gourami and the honey gourami are completely different species within that genus. The former is colisa lalia. The latter is colisa chuna/sota. The dwarf gourami gets to 2" and isn't particularly hardy. They come in several color morphs including the confusingly-named 'honey' variety. The actual honey gourami gets to about 1.5" and looks much more delicate with a much less 'solid' looking body. These are much hardier than dwarfs and, though they also come in several varieties, most males develop a dark blue-black underside once mature which the dwarf gourami does not. This is probably the species you were reffering to OohFeeshy. A single male honey gourami should be ok in a 3 gallon because it is hardy, small and will set up a small territory from which it won't mind not being able to stray far. Females, on the other hand, are not territorial and like company so it isn't fair to get one of this sex. A dwarf gourami would not be suitable because of their sensitivity to fluctuations of water quality and temp. and their unfortunate susceptibility to disease as a result of stress. They also get slightly larger and produce comparitively more waste.
