Male gouramis have a tendency to be aggressive towards each other, so they should typically be kept individually. Female gouramis usually tolerate each other well. ... Gouramis are slow moving and are best kept with similar sized fish that are not fin nippers or too active.

Do gouramis attack other fish?

Although Gouramis are not aggressive fish, males can become very aggressive towards each other when they feel threatened, nipping fins and generally bothering other fish in the tank. ... They are only aggressive if they feel threatened by a fish that looks similar in shape and size.

Are gourami friendly?

Although gouramis are not aggressive fish, males can become belligerent toward each other. However, I have a small group of male Cobalt Blue Dwarf Gouramis together with a couple of females, and the community is harmonious with no signs of aggression at all.