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Encyclopedia / African Cichlids / Fuelleborn's mbuna
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Variations

2 kinds · tap one for a closer look

Fuelleborn's mbuna

Labeotropheus fuelleborni · Labeotropheus fuelleborni, Fuelleborni, Blue scrapermouth, Scrapermouth cichlid

Aggressive when breeding; keep in a big rocky tank with other robust mbuna.

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· real AED shop prices, never conversions
17 cmBody length, without tail ✓
24–28 °CTemperature ✓
7.8–8.6pH ✓
154 LSmallest tank ✓
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✕Not recommended
  • Fuelleborn's mbuna is aggressive and will bully peaceful neon tetra.
  • Rift lake cichlids like fuelleborn's mbuna need hard, alkaline water and a busy, cichlid-only tank.
✕Not recommended
  • Fuelleborn's mbuna is aggressive and will bully peaceful cardinal tetra.
  • Rift lake cichlids like fuelleborn's mbuna need hard, alkaline water and a busy, cichlid-only tank.
✕Not recommended
  • Fuelleborn's mbuna is aggressive and will bully peaceful black neon tetra.
  • Rift lake cichlids like fuelleborn's mbuna need hard, alkaline water and a busy, cichlid-only tank.
!With conditions
  • Rift lake cichlids like fuelleborn's mbuna need hard, alkaline water and a busy, cichlid-only tank.
  • Their pH needs don't quite meet (7.8–8.6 vs 5.5–7.5). Aim between the two and keep it steady.
!With conditions
  • Rift lake cichlids like fuelleborn's mbuna need hard, alkaline water and a busy, cichlid-only tank.
  • Only a narrow pH range suits both: 7.8–8.
✓Compatible
✓Compatible
✓Compatible
✓Compatible
✓Compatible

61 species in our list are a good match.

Facts checked against sources on 16 Oct 2026. ✓ means a source backs it; ? means no reliable source yet. See sources

Care and water

Hardness ✓10–25 dGH
Group size ✓4 or more
Temperament ✓Aggressive
Swims at ?Middle
Care level ✓Moderate
Diet Herbivore
Lifespan ?Unknown
Size in shops 4–8 cm
Growth Medium

Behavior

Aggressive when breeding; keep in a big rocky tank with other robust mbuna.

  • cave

Food

Algae-based pellets and spirulina flakes; occasional greens.

Tap a food to see what it is.

Male or female

Males are larger and far more colourful than females.

Health

Common problems. Tap one to see the signs. This is a guide, not a diagnosis.

Breeding

Maternal mouthbrooder (harem) · Moderate

A maternal mouthbrooder, spawned as a harem of one male and at least 3 females; the female carries the brood for up to 3-4 weeks.

Pairing

Keep one male with 3-5 females; a lone female is harassed to exhaustion and two males will fight.

Setup

150-250 L rockwork tank with many caves, hard alkaline water (pH 7.8-8.6) and strong filtration. Keep a bare 60 L tank handy to move a holding female.

What starts it

Stable warm water (26-28 C), regular water changes and a good male-to-female ratio; the male displays and leads a female to a flat rock or cave.

Eggs

25-60 eggs per brood, carried for up to 3-4 weeks.

Raising the fry

The female releases free-swimming fry after 3-4 weeks. Feed finely crushed flake, spirulina powder and newly hatched brine shrimp from day one; do small daily water changes. Remove the female after release so she can recover.

Common mistakes
  • Too few females so the male harasses them
  • Mixing similar-looking mbuna that hybridise
  • Soft or acidic water
Full breeding guide, day-by-day plan and simulator →

Where it lives in the wild

Lake MalawiLoading the map…
Native range (rough area)Centre of the rangePlaces on the World Map
RegionLake Malawi
Rivers and lakesLake Malawi (rocky coasts)
HabitatShallow, wave-washed rocky shores
Native rangeAbout 350 km across
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The story of the fuelleborn's mbuna

A widespread Lake Malawi mbuna with an overhanging snout used to scrape algae from rocks. It is territorial over rocks and sometimes forms feeding schools of hundreds that raid other fishes' algae gardens.

Ernst Ahl described this mbuna in 1926, honouring Friedrich Fülleborn, who explored the Lake Nyasa region. Its fleshy, rounded snout makes it look different from other cichlids. It has been kept in aquariums since the early days of the mbuna trade.

First described by Ernst Ahl in 1926. Named for Named after German physician and explorer Friedrich Fülleborn.

  • Its underslung mouth lets it scrape algae while lying almost flat against rocks.
  • It prefers shallow, turbulent water near the surface.
  • Several colour forms exist, including orange-blotched variants.

Sources

15 facts checked with sources

  • Scientific name

    Valid name, Ahl 1926. FishBase common name: blue mbuna.

    FishBase: Labeotropheus fuelleborni summary
  • Familycorrected

    Legacy had no family.

    FishBase: Labeotropheus fuelleborni summary
  • Size

    Seriously Fish 17.5 cm SL matches legacy 17 cm. FishBase's 30 cm SL (females 8.7 cm SL) looks like an outlier; treat with caution.

    Seriously Fish: Labeotropheus fuelleborni · FishBase: Labeotropheus fuelleborni summary
  • Temperature

    FishBase lists 22-25 °C.

    Seriously Fish: Labeotropheus fuelleborni
  • pH

    FishBase 7.5-8.5.

    Seriously Fish: Labeotropheus fuelleborni
  • Hardnesscorrected

    Legacy had no hardness.

    Seriously Fish: Labeotropheus fuelleborni
  • Smallest tankcorrected

    Seriously Fish base 90 x 45 cm; 90 x 45 x 38 cm ≈ 154 L. Legacy 250 L exceeds the source minimum; a larger tank is sensible for a 17 cm fish.

    Seriously Fish: Labeotropheus fuelleborni
  • Group sizecorrected

    One male with at least 3 females = 4 fish.

    Seriously Fish: Labeotropheus fuelleborni
  • TemperamentSeriously Fish: Labeotropheus fuelleborni
  • Care level

    Seriously Fish difficulty 4 of 8.

    Seriously Fish: Labeotropheus fuelleborni
  • Where it livescorrected

    Legacy had no native range.

    Seriously Fish: Labeotropheus fuelleborni · FishBase: Labeotropheus fuelleborni summary
  • Male or femalecorrected

    Legacy colour details (blue males, orange-blotched females) vary by locality and were not confirmed in a fetched source.

    Seriously Fish: Labeotropheus fuelleborni
  • Breeding

    Different colour forms may hybridise and should not be mixed (Seriously Fish).

    Seriously Fish: Labeotropheus fuelleborni
  • Eggs and youngcorrected

    Legacy said 10-30 eggs.

    Seriously Fish: Labeotropheus fuelleborni
  • Storycorrected

    Legacy 'males blue, females orange-blotched' not confirmed; replaced with sourced facts. IUCN: Least Concern (2018).

    Seriously Fish: Labeotropheus fuelleborni · FishBase: Labeotropheus fuelleborni summary