Classificazione / Nomi
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Maylandia: In honour of Hans J. Mayland, German ictiologist (Ref. 45335); sciasma: The specific epithet, sciasma, is Greek for shadow, in reference to the black pelvic fins of males; it is treated as a noun in apposition (Ref. 86409).
Eponymy: Hans-Joachim Mayland (1928–2004) was a German ichthyologist, aquarist, photographer and writer. [...] (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Tropical; 10°S - 11°S, 34°E - 35°E
Africa: Lake Malawi in Tanzania (Ref. 86409).
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 7.1 cm SL maschio/sesso non determinato; (Ref. 86409)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 16 - 19; Raggi dorsali molli (totale) : 8 - 10; Spine anali: 3; Raggi anali molli: 7 - 9. Diagnosis: A moderately-sloped head and bicuspid teeth in the outer row of the jaws place this species in Maylandia (Ref. 86409). A black pelvic fin, a dark-blue cheek and preorbital area, and a blue dorsal fin without a black submarginal band in breeding males and the light-brown coloured females that have yellow fin-margins distinguish M. sciasma from all other members of Maylandia (Ref. 86409). Breeding males of M. sciasma are distinguished from those of some populations of M. zebra by the presence of a single interorbital bar, vs. 2 in M. zebra, and by black pigment on the anterior membranes of the anal fin; female M. sciasma cannot reliably be distinguished from those of most other members of the Aurora group, but differ from those of M. aurora by more vertical bars below the dorsal fin, 7–10 vs. 6 (Ref. 86409).
Body shape (shape guide): fusiform / normal.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Ciccotto, P.J., A. Konings and J.R. Stauffer Jr., 2011. Descriptions of five new species in the genus Metriaclima (Teleostei: Cichlidae) from Lake Malaŵi, Africa. Zootaxa 2738:1-25. (Ref. 86409)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00671 - 0.03113), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 2.3 ±0.1 se; based on size and trophs of closest relatives
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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