Aulonocara ethelwynnae · Northern Aulonocara

Overview

Mature males of the less frequently traded Aulonocara ethelwynnae show distinctive chocolate-brown bars. It is comparatively peaceful, yet territorial males can challenge fishes with similar markings.

Distribution & habitat

Its known range is limited to Chitande Island and nearby northwestern Lake Malawi shoreline between Ngara and Chilumba. At rock–sand transitions, females and immature males reportedly gather loosely in shallower water, while mature males hold deeper territories.

Aquarium setup

Arrange rocks around open fine-sand areas. Coarse particles can interfere with sifting, damage gills, or be swallowed. Hard-water-tolerant plants are optional. Use a mature aquarium with efficient external or sump filtration, preventing chemical swings and maintaining cleanliness through weekly changes of roughly 30–50%.

Diet & feeding

Members of the genus use enlarged head sensory pores to detect small substrate movements and sift sand for food. Offer fine prepared products with tiny live or frozen invertebrates, including Artemia, bloodworms, or Tubifex. Include some plant-rich dry foods and divide feeding into three or four modest portions.

Behaviour & compatibility

Choose peaceful companions with different patterns. Most mbuna are too forceful, and other members of the genus introduce hybridization risks. One male with four to six females is the usual arrangement outside exceptionally large systems.

Sexual dimorphism

Males are larger and more colorful. Breeding individuals gain blue between the dark body bars and on the lower head.

Breeding

This maternal mouthbrooder can spawn in a community, but a dedicated setup improves fry survival. Use several females to spread male attention, with flat stones and open sand for spawning. Females gather eggs in batches, with fertilization associated with the male’s egg-spot display.

Brooding may last about four weeks without normal feeding. Disturbance can cause brood loss, while prolonged isolation can complicate return to the group. Balance protection from harassment against unnecessary moves. Fry need no added food while yolk remains; afterward, Artemia nauplii are suitable. Sex differences usually start appearing around four months.