Mylochromis melanonotus
Haplochromis Yellow-black Line
Last revised 2026Edit this page
On this page10 sections
Quick factsEdit
Difficulty5 of 8 measures
- Space
- very large tank
- Water
- flexible
- Temp
- needs a steady temperature
- Diet
- unknown
- Temperament
- eats smaller fish
- Social
- one male with several females
- Compatibility
- unknown
Other demands
Each of these can raise the rating on its own, whatever the measures above say.
- Hardiness
- unknown
- Needs a very large tank
Before you buy
Needs a soft, sandy substrate
A sandy substrate is essential, as the fish will often take mouthfuls of sand into their mouths, sifting it for food items.
Known in the trade as 'Haplochromis yellow-black line', Mylochromis melanonotus is a predatory cichlid endemic to Lake Malawi. Rarely imported, it caused confusion because some individuals have a shovel-like lower jaw. Ad Konings found wild populations with and without it, and Platygnathochromis and M. semipalatus are now regarded as synonyms. A sandy substrate is essential, and it will eat small fish.
Distribution
EditEndemic to Lake Malawi. It has a wide distribution in the lake.
Habitat
Write a noteEditIt 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
Write a noteEdit150 ∗ 60 ∗ 60 cm60 ∗ 24 ∗ 24 in - ~540 litres~143 US gal for adult specimens. Juveniles can be kept in smaller aquaria.
Maintenance
Write a noteEditArrange 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
EditTemperature: 24 – 28 °C75 – 82 °F
pH: 7.6-8.8
Hardness: 10-25°H
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Diet
Write a noteEditOffer a varied diet of meaty live and frozen foods and good quality cichlid pellets.
Behaviour and compatibility
Write a noteEditIt 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
Write a noteEditMales are more colourful than females.
Reproduction
Write a noteEditNot 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
EditM. 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.
Distribution
Profile completeness18 of 24
75% complete
Also missing: photograph credits, taxonomic authority, etymology.
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