This charming, bright colored little fish is a smaller, Archocentrus species that can actually be considered a true 'dwarf' cichlid. Males can grow out to almost 5 inches in length, (rare). Expect an adult size of closer to 4 inches for males of the Yellow Dwarf, with the females growing out slightly smaller in length. This is not an aggressive cichlid. Stocking in community tanks is best accomplished with smaller, more peaceful tank mates to keep the shyer, less aggressive A. nanoluteus from getting crushed. Conspecific aggression in this cichlid however, can be a problem. For long-term, adult sized compatibility, four foot long tanks are recommended as the minimum size for keeping more than one pair in the aquarium. Water quality is an issue with this more delicate Central American cichlid, as well. To get this species colored up and spawning well in the aquarium, it is recommended to keep the water clean and very fresh in the tank with an aggressive schedule of regularly conducted water changes. Providing softer water at a neutral to slightly alkaline PH will be appreciated.