Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Cichlidae
(Cichlids) > Pseudocrenilabrinae
Etymology: Maylandia: In honour of Hans J. Mayland, German ictiologist (Ref. 45335); nkhunguensis: The specific name refers to one of the reefs at which the species is endemic.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical; 13°S - 14°S
Africa: endemic to Lake Malawi, restricted to the Minos and Nkhungu reefs in Mozambique (Ref. 86409).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.3 cm SL male/unsexed; (Ref. 86409)
Morphology | Morphometrics
(total): 17 - 18;
soft rays: 7 - 8. Diagnosis: A moderately-sloped head and bicuspid teeth in the outer row of the jaws place this species in Maylandia (Ref. 86409). Both males and females are light blue, fading to white ventrally, distinguishing them from all other members of Maylandia, except M. callainos; male M. nkhunguensis are distinguished from those of the similarly coloured M. chrysomallos from the Gome population, M. estherae, and M. callainos, the latter two species of the sediment-free rocky habitat, by the yellow base of the pectoral fin, vs. no yellow pigment in males of the other three species; female M. nkhunguensis are light blue, lighter than those of the only other known species with all-blue females, M. callainos, which are a darker cobalt-blue; female M. estherae are either brown or orange/red); Maylandia nkhunguensis is further distinguished from M. callainos by a shorter lower jaw, 29.4-34.1% of head length vs. 34.9-43.3% (Ref. 86409).
Occupies intermediate habitats at Minos and Nkhungu reefs; these reefs are shallow, less than 7 m deep; males hold territories mainly over sand near rocks and excavate
beneath rocks to construct their spawning burrow; feeds on sediment-rich aufwuchs on rocks from which it rakes diatoms and loose algal strands (Ref. 86409).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ciccotto, P.J., A. Konings and J.R. Stauffer Jr., 2011. Descriptions of five new species in the genus Metriaclima (Teleostei: Cichlidae) from Lake Mala?i, Africa. Zootaxa 2738:1-25. (Ref. 86409)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00700 - 0.03275), b=2.97 (2.80 - 3.14), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.6 ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (11 of 100) .