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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Pseudotropheus: Greek, pseudes = false + Greek, tropaion = defeat, a memorial of a fighting war, trophy; because of their specialized teeth were such an obvious feeding adaptation (Ref. 45335).
Eponymy: John Johns was a collector of Lake Malawi fishes for the aquarium trade. ‘Johann’ is a German variant of John. Unfortunately, we have no further information about him. (Ref. 128868), visit book page.
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
; agua dulce bentopelágico; pH range: 8.0 - 8.0; dH range: 9 - 19. Tropical; 22°C - 25°C (Ref. 1672); 13°S - 14°S
Africa: endemic to Lake Malawi. Occurs in Masinje Rocks, Cape Ngombo.
Tamaño / Peso / Age
Madurez: Lm ? range ? - ? cm
Max length : 10.0 cm TL macho / no sexado; (Ref. 5663)
Short description
Claves de identificación | Morfología | Morfometría
Males are brilliant sky blue to dark blue; the colors show a "checkerboard" pattern with alternating light and dark patches; several light-colored "egg spots" on their anal fin; females and juveniles bright yellow-orange in color (Ref. 44091).
Body shape (shape guide): fusiform / normal.
Found in rocky habitats of shoreline areas (Ref. 58302). Omnivorous and feed on both plant and animal matter (Ref. 44091).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Maternal mouthbrooders; males establish territories and maintain a harem of females; female deposits eggs and picks them up in the mouth for incubation; male spreads out his anal fin showing the "eggs pots"; the females mistake these spots for her eggs and try to also take them inside her mouth; the male then releases his milt and the female takes them in, thus fertilizing the eggs inside her mouth (Ref. 44091).
Maréchal, C., 1991. Melanochromis. p. 258-265. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5663)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Acuario: Comercial
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00674 - 0.03099), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 2.0 ±0.0 se; based on diet studies.
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Fec<1000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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