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Mylochromis melanonotus

Haplochromis Yellow-black Line

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Quick facts

Length
260mm SL10in SL
Tank base
150 × 60cm60 × 24in
Temp
24–28°C75–82°F
pH
7.6–8.8
Hardness
10–25dGH

Difficulty4 of 6 measures

Moderate

More bars, more demanding.

Space
very large tank
Water
tap water
Temp
steady heat
Temperament
predatory
Social
unknown
Compatibility
unknown

M. melanonotus is rarely imported and little information is available regarding its captive care. The shovel-like lower jaw possessed by some individuals of this species has been the cause of some confusion regarding the fishes' true identity. It was originally placed in the genus Platygnathochromis, in which it was the only species. However, Ad Konings observed that amongst wild breeding populations there existed individuals both with and without the modified lower jaw. The specimens witho...

Distribution

Endemic to Lake Malawi. It has a wide distribution in the lake.

Habitat

It usually inhabits areas with sandy substrates in deeper water but is also often found around the intermediate shoreline areas, where there are scattered rocks over sandy bottoms.

Aquarium size

Standard length
260mm SL10in SL
Aquarium base
150 × 60cm60 × 24in
Volume
~540litres~143US gal

150 ∗ 60 ∗ 60 cm60 ∗ 24 ∗ 24 in - ~540 litres~143 US gal for adult specimens. Juveniles can be kept in smaller aquaria.

Maintenance

Arrange piles of rocks to form caves and hiding places, with areas of open space between for swimming. A sandy substrate is essential, as the fish will often take mouthfuls of sand into their mouths, sifting it for food items. If gravel is used the mouthparts or gills may be damaged or a piece may get stuck in the throat of the fish.

Water conditions

Temperature
24–28°C75–82°F
pH
7.6–8.8
Hardness
10–25dGH

Temperature: 24 – 28 °C75 – 82 °F

pH: 7.6-8.8

Hardness: 10-25°H

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Diet

Offer a varied diet of meaty live and frozen foods and good quality cichlid pellets.

Behaviour and compatibility

It is piscivorous and will eat small fish. It is not particularly aggressive with anything too large to fit in its mouth, but the choices are fairly limited. Tankmates could include Aristochomis, Fossorochromis rostratus or Rift Lake Synodontis species. It should not be kept with mbuna. Male fish should be kept along with several females but are territorial with other males, so we suggest only one male per aquarium.

Sexual dimorphism

Males are more colourful than females.

Reproduction

Not known to have occured in aquaria. It is a maternal mouthbrooder and in nature, breeding occurs in a similar fashion to others of the genus, with the males excavating large pits which they defend against other males. Spawning occurs in these pits after which the female leaves the male's territory.

Notes

M. melanonotus is rarely imported and little information is available regarding its captive care. The shovel-like lower jaw possessed by some individuals of this species has been the cause of some confusion regarding the fishes' true identity. It was originally placed in the genus Platygnathochromis, in which it was the only species. However, Ad Konings observed that amongst wild breeding populations there existed individuals both with and without the modified lower jaw. The specimens without the modification were identical to another species, Mylochromis semipalatus. Therefore all these fish are now classified as Mylochromis melanonotus, with Platygnathochromis and semipalatus being regarded as synonyms of this species.

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