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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Maylandia: In honour of Hans J. Mayland, German ictiologist (Ref. 45335); nigrodorsalis: The name nigrodorsalis, from Latin, means black dorsal, alluding to the black submarginal band in the dorsal of males and some females (Ref. 93436).
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt Tầng nổi. Tropical
Africa: Lake Malawi (Ref. 93436).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.3 cm SL con đực/không giới tính; (Ref. 93436)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 17 - 19; Các vây lưng mềm (tổng cộng) : 8 - 10; Tia cứng vây hậu môn: 3; Tia mềm vây hậu môn: 7 - 9. Diagnosis: The presence of bicuspid teeth in the anterior portion of the outer row on both the upper and lower jaws and a moderately sloped ethmo-vomerine block with a swollen rostral tip place this species in Maylandia (Ref. 93436). The presence of a black submarginal band in the dorsal fin in combination with distinct black lateral bars on a blue and/or yellow flank and with yellow pigment on the cheek and breast distinguish males of this species from those of all other members of the genus except from those of the Maleri Island population of M. flavifemina; Maylandia nigrodorsalis can be distinguished from M. flavifemina by a deeper cheek, being 25,3-32,0% of body depth in M. nigrodorsalis vs. 20,3-24,8% in M. flavifemina from Maleri Island (Ref. 93436). Female Maylandia nigrodorsalis are distinguished from all other female Maylandia, except from those of M. lundoense, by the presence of a black submarginal band in the dorsal fin; female M. nigrodorsalis cannot reliably be distinguished from those of M. lundoense (Ref. 93436).
Life cycle and mating behavior
Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng
Stauffer, J.R., K. Black and A.F. Konings, 2013. Descriptions of five new species of Metriaclima (Teleostei: Cichlidae) from Lake Malaŵi, Africa. Zootaxa 3647(1):101-136. (Ref. 93436)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 2.3 ±0.1 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).