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Encyclopedia / African Cichlids / Rusty cichlid
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Variations

2 kinds · tap one for a closer look

Rusty cichlid

Iodotropheus sprengerae · Rusty, Iodotropheus, Sprengerae, Rusty mbuna

Mild for an mbuna, but still territorial.

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· real AED shop prices, never conversions
10 cmBody length, without tail ✓
25–29 °CTemperature ✓
7.8–8.6pH ✓
81 LSmallest tank ✓
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✕Not recommended
  • They need different temperatures (25–29 °C vs 16–24 °C). No setting suits both.
  • Rift lake cichlids like rusty cichlid need hard, alkaline water and a busy, cichlid-only tank.
✕Not recommended
  • They need different temperatures (25–29 °C vs 18–24 °C). No setting suits both.
  • Rift lake cichlids like rusty cichlid need hard, alkaline water and a busy, cichlid-only tank.
✕Not recommended
  • White cloud mountain minnow needs cool water and makes a lot of waste, while Rusty cichlid is tropical.
  • Rift lake cichlids like rusty cichlid need hard, alkaline water and a busy, cichlid-only tank.
!With conditions
  • Rift lake cichlids like rusty cichlid need hard, alkaline water and a busy, cichlid-only tank.
  • Only a narrow temperature range suits both: exactly 25 °C.
!With conditions
  • Rift lake cichlids like rusty cichlid need hard, alkaline water and a busy, cichlid-only tank.
  • Their pH needs don't quite meet (7.8–8.6 vs 4.5–7). Aim between the two and keep it steady.
✓Compatible
✓Compatible
✓Compatible
✓Compatible
✓Compatible

67 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 ✓6 or more
Temperament ✓Semi-aggressive
Swims at ?All levels
Care level ✓Easy
Diet Omnivore
Lifespan ?Unknown
Size in shops 3–5 cm
Growth Medium

Behavior

Mild for an mbuna, but still territorial. Fine with other peaceful mbuna such as acei and yellow labs.

  • cave

Food

Quality spirulina-based cichlid pellets and flake once or twice a day; keep protein low and add vegetable matter such as spirulina and blanched greens.

Tap a food to see what it is.

Male or female

Sexes look similar; males usually have more egg spots on the anal fin, tend to be larger and more colourful, and some develop an elongated anal fin.

Health

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

Breeding

Maternal mouthbrooder (harem) · Moderate

Maternal mouthbrooder with one male to several females; the female carries the eggs for up to 3 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

5-60 eggs per brood, carried for up to 3 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

RegionLake Malawi – south-eastern arm, Malawi
Rivers and lakesLake Malawi (Boadzulu and nearby islands)
HabitatRocky slopes around small islands
Native rangeAbout 30 km across
See it on the world map

The story of the rusty cichlid

One of the least aggressive and smallest mbuna, and a great first mbuna for newcomers.

Oliver and Loiselle described the rusty cichlid in 1972 as the only member of its genus. It is known from a few small islands in the south-east of Lake Malawi. Its gentle temperament made it a popular choice for mixed mbuna tanks.

First described by Michael K. Oliver & Paul V. Loiselle in 1972.

  • It is the only species in the genus Iodotropheus.
  • Its rust-brown body shows a violet sheen in good light.
  • It stays small, typically around 10 cm, and is milder than most mbuna.

Sources

15 facts checked with sources

  • Scientific name

    Also called lavender mbuna. Seriously Fish: 'It is sometimes confused with certain populations of Labidochromis vellicans' (told apart by its rounder head and no blue on the rear half of the body).

    FishBase: Iodotropheus sprengerae
  • Familycorrected

    New value (legacy had none).

    FishBase: Iodotropheus sprengerae
  • Size

    Both are standard length (SL).

    Seriously Fish: Iodotropheus sprengerae · FishBase: Iodotropheus sprengerae
  • Temperaturecorrected

    Seriously Fish (preferred for husbandry) gives 25-29 °C; FishBase 24-26 °C. Legacy 24-28 overlaps both; small shift.

    Seriously Fish: Iodotropheus sprengerae · FishBase: Iodotropheus sprengerae
  • pH

    Legacy range lies within Seriously Fish's 7.5-8.8.

    Seriously Fish: Iodotropheus sprengerae
  • Hardnesscorrected

    New value (legacy had none).

    Seriously Fish: Iodotropheus sprengerae
  • Smallest tankcorrected

    90 x 30 x 30 cm = 81 L for one male and a few females. For more than one male Seriously Fish advises at least 48 in (122 cm) length: 'A 48" aquarium is a good size for 2-3 males and perhaps a dozen females.' Legacy 150 L is a generous figure for a mixed mbuna tank.

    Seriously Fish: Iodotropheus sprengerae
  • Group size

    Source gives one male with several females (no exact number); legacy 6 fits.

    Seriously Fish: Iodotropheus sprengerae
  • Temperament

    Mild for an mbuna and easily outcompeted by boisterous species: 'tankmates should be chosen wisely.'

    Seriously Fish: Iodotropheus sprengerae
  • Care level

    Seriously Fish's overall difficulty rating is 'Moderate', but its text recommends it for newcomers to mbuna.

    Seriously Fish: Iodotropheus sprengerae
  • Where it livescorrected

    New value (legacy had none). IUCN status Near Threatened (FishBase, assessed 2018) because of its very small range.

    Seriously Fish: Iodotropheus sprengerae · FishBase: Iodotropheus sprengerae
  • Male or femaleSeriously Fish: Iodotropheus sprengerae
  • Breedingcorrected

    Brooding time up to 3 weeks vs legacy 3-4 weeks. Can mature at about 1.5 in (Seriously Fish).

    Seriously Fish: Iodotropheus sprengerae · FishBase: Iodotropheus sprengerae
  • Eggs and youngcorrected

    Wider brood range than legacy 10-30 and shorter brooding.

    Seriously Fish: Iodotropheus sprengerae
  • Story

    'Hardy' is not supported: Seriously Fish lists hardiness as unknown and says water quality is paramount.

    Seriously Fish: Iodotropheus sprengerae