Furry Diary

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Eureka Red Peacock Cichlid

Aulonocara jacobfreibergi (Johnson, 1974), ornamental 'Eureka' strain

Also called Eureka Red Peacock, Freiberg's Peacock, Fairy Cichlid, Malawi Butterfly

VarietyShort profile

From Aquarium-bred ornamental strain line-produced from the wild Otter Point population of Aulonocara jacobfreibergi, a peacock cichlid native only to the southern part of Lake Malawi (East Africa).123

At a glance the quick version

Length15 to 17 cm231
Sizemedium
Striking colour in mature males
Calmer than many rock-dwelling Malawi cichlids
Long-established, widely available aquarium strain
14

Looks how to spot one

Elongated haplochromine cichlid (peacock)

A sleek, torpedo-shaped Malawi cichlid with long, flowing fins. Males are the showpieces, larger and far more colourful than the plainer females, and the fins carry broad pale edges.14

Coloursred to orange-red male colouration (Eureka strain)related ornamental forms include albino and yellow 'lemon jake'females duller134

Personality what they are like

A moderately assertive cichlid. Males can be pushy towards fish with a similar look, but the species is generally calmer than the mbuna rock-dwellers of the same lake.14

Daily activity how busy a day looks

An active swimmer that needs open swimming room plus rockwork; it spends a lot of time sifting through sand for food.1

Grooming and care the hands-on bits

Needs a mature aquarium with very good water quality: strong filtration and large weekly water changes (around 30 to 50 percent) are advised.1

Home where they are happiest

Tank with a base of at least 120 x 60 cm (about 430 litres), fine sand with piles of rock. Temperature 24 to 29 C, pH 7.5 to 9.0, hardness roughly 9 to 25 dGH.12

Food basics what goes in the bowl

Naturally sifts the sandy bottom for small invertebrates. Offer quality prepared foods plus frozen or freeze-dried items such as bloodworm and Artemia, with some plant matter, split into 3 to 4 small meals a day.12

Company who they like around

Best kept as one male with several (4 to 6) females. Avoid mixing with other Aulonocara species, since they can crossbreed.1

The story where it all began

The wild species was named in 1974 in honour of Jacob Freiberg, a New Jersey fish importer who helped collect the type specimen. It was one of the earliest peacock cichlids in the hobby, and the bright 'Eureka' line was developed in captivity from fish of the Otter Point population.31

Fun facts for the dinner table

  1. 1

    The 'Eureka' look does not occur in the wild; it was line-bred from the Otter Point population.1

  2. 2

    Females are mouthbrooders and carry the developing young in their mouths for up to about four weeks.1

  3. 3

    The species name honours Jacob Freiberg, a fish importer from Verona, New Jersey.3

  4. 4

    Peacock cichlids are strongly sexually dichromatic, even compared with their haplochromine relatives.4

Recognised by the official bits

IUCN Red List
Wild species A. jacobfreibergi: Least Concern (assessed 22 June 2018)2
Taxonomy
Species described by Johnson in 1974; 'Eureka' is a selectively bred ornamental strain, not a separate species1

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Eureka Red Peacock Cichlid. It is our own starting plan, not a vet's advice, and you can change every line in the app.

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Where this comes from

Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at support@furrydiary.app and we will fix it.

  1. Seriously Fish: Aulonocara jacobfreibergi seriouslyfish.comused for Eureka strain origin, care, tank size, behaviour, breeding
  2. FishBase: Aulonocara jacobfreibergi fishbase.seused for size, water parameters, distribution, IUCN, describer
  3. Wikipedia: Aulonocara jacobfreibergi en.wikipedia.orgused for other names, name origin, colour morphs
  4. Wikipedia: Aulonocara en.wikipedia.orgused for common name 'eureka red peacock', dichromatism, temperament

Checked 2026-09-30. Text is written in our own words from these sources.