A peaceful cichlid, especially by Central American standards, which will appreciate tankmates of a similar disposition. Tetras barbs and other smaller peaceful cichlids can all be considered. Small plecs and doradids make suitable bottom-dwellers.
Sand subtrate should be used, although this fish would actually prefer a muddy bottom which would pose a challenge to the aquarist. Other tank decor is not critical, although the Rainbow cichlid will appreciate areas of planting in which it can take cover. Water flow should be slow to moderate and lighting not overly strong.