Most gourami's are a little bit aggressive (some more than others) but I would think that because the honey gourami's size aggression towards other fish would be minimal, he might occaisionally chase another fish but it's likely to be playful. Also, do not put two males in together or they will establish their territory's and become aggressive towards each other and (sometimes) other fish.
With 1 male or 1 male 2 female the aggression should be little.