A dazzling Lake Malawi cichlid whose males blaze with metallic blue, gold, and red. Peaceful by Rift Lake standards and a sand-sifting Aulonocara, it suits hard-water African setups with mixed open and rocky zones.
ℹ️
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Medium cichlid; males reach about 5-6 in (13-15 cm), females a little smaller.
Lifespan
6–10 years
Social needs
group
Native region
East Africa (Lake Malawi)
Origin
Old World
Climate
🌴 Tropical
Water type
💧 Freshwater
Family
Cichlidae
Genus
Aulonocara
Part of the African Cichlids
Hardy, vividly colored cichlids from Africa's Rift Lakes (Malawi, Tanganyika, Victoria) and beyond, kept in hard, alkaline, rock-built aquariums. Many are territorial mouthbrooders best housed in robust species-appropriate groups rather than mixed communities.
From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.
Photo coming soon
Minimum
All-male Malawi tank
55 gal / 200 L all-male
Aulonocara are insect/sand-sifting Malawi cichlids needing hard alkaline water (pH 7.8–8.6, 24–28 °C), fine sand, and a rocky backdrop. All-male tanks avoid drab female colours.
Photo coming soon
Recommended
Long all-male display
75–125 gal / 280–470 L
Longer footprint accommodates 6–10 males of different colour strains (no two looking alike) to spread aggression. Strong filter and crushed-coral substrate keep pH stable.
Photo coming soon
Ideal
Large Malawi biotope
180 gal+ / 680 L+ biotope
Long stable Malawi biotope with sand-rock interface, dim hood, and a wide species mix. Mature dominant males display blazing colour and natural territorial dances.
Life & growth stages
How this animal changes through its life — each stage often has its own care, diet and space needs.
Photo coming soon
Egg
Fish eggs are small, translucent spheres, often laid in clutches on plants, substrate, or in a nest — or carried/brooded by a parent in livebearing and mouth-brooding species. A dark eye spot and the curled embryo become visible inside as development progresses.
Photo coming soon
Fry
Newly hatched fry are tiny and semi-transparent, frequently still carrying a yolk sac that fuels them before they feed freely. They lack full fin structure and adult coloration, staying near cover until they can swim and forage on their own.
Photo coming soon
Juvenile
Juveniles look like miniature adults but with developing fins and muted or different markings; many species shift pattern and color as they mature. Growth is rapid at this stage given clean water and steady feeding.
Adult
Adults show the species' full size, finnage, and mature coloration, and are sexually mature. Many fish develop sex-specific differences in size, color, or fin shape, which can intensify during breeding.
Color & pattern variants
Natural variants occur in the wild; selectively bred (man-made) variants were developed in captivity.
A male with several females needs a minimum of about 55 gallons (208 L) with both open sand for foraging and rock structure for shelter and breeding. Provide hard, alkaline Malawi conditions: temperature 76-82 F (24-28 C), pH around 7.8-8.6, and high hardness with good mineral content.
Unlike rock-bound Mbuna, peacocks naturally patrol the sandy zones between rocks, hunting prey in the substrate, so leave generous open sand and arrange rockwork around the margins. Bright lighting brings out the males' iridescence, and stable, well-buffered water keeps colors strong.
Substrate
Use a soft sand substrate, which is important because these are natural sand-sifters that forage by mouthing and filtering the bottom. Aragonite sand additionally buffers toward the high pH and hardness they need.
Equipment & setup
Robust canister or large hang-on-back filtration handles the bioload while keeping the open sand clean, paired with a heater and steady turnover. Buffer the water with mineral salts or a crushed-coral component; bright lighting flatters the males, and CO2 is unnecessary.
Diet
A carnivorous sand-sifter that in nature detects and ambushes tiny invertebrates in the substrate using sensory pits on its head. Feed a quality cichlid pellet or flake (color-enhancing formulas suit them) plus frozen or live brine shrimp, daphnia, cyclops, and mysis. Avoid heavy, fatty mammalian foods; a measured carnivore diet keeps them healthy and prevents bloat-type problems.
Behavior & temperament
Among the more peaceful Malawi cichlids and far calmer than most Mbuna, though males are territorial and best kept one-per-tank or in large tanks with space. Not a true community fish, but mixes well with other peaceful haplochromine-type cichlids of similar temperament; avoid housing with aggressive Mbuna, which outcompete and harass them. Keep more females than males and provide hiding spots.
Health
Susceptible to Malawi bloat if fed too richly, plus ich and bacterial infections under stress or poor water quality. Hybridization is a hobby concern rather than a health one - mixing Aulonocara species or with Mbuna produces muddy, non-pure offspring. Maintain hard, clean, well-filtered alkaline water, a carnivore-appropriate diet, and regular water changes; quarantine new fish to avoid introducing disease.
Tips, DIY & hacks
Note that many trade peacocks are line-bred or hybrid color strains (often sold as 'OB', 'Ruby Red', etc.); buy known-source fish if you want pure Aulonocara nyassae. They are maternal mouthbrooders, so a male with a harem will breed readily, and a holding female can be moved to a separate tank to rear fry.
