Buenos Aires tetras are social fish that swim in schools. Although this species of tetra is generally peaceful, avoid keeping Buenos Aires tetras with smaller fish such as the neon tetra. Also, avoid housing them with long-finned fish such as the betta and angelfish. Buenos Aires tetras will nip at the fins of long-finned tankmates.

A school of Buenos Aires tetras are also good dither fish among non-aggressive cichlids; they help relax cichlids enough to come out of hiding.

* Photos are for reference only *