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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Taxonomic Remarks
Turner and Robinson 1991 (Ref. 55079) conclude that Oreochromis saka is a junior synonym of O. karongae (also Ref. 6150), although Turner et al. 1989 (Ref. 40180) reported O. squamipinnis to be most similar to O. saka and O. karongae the most divergent (also Ref. 55954).
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch. Tropical; 9°S - 15°S
Africa: Endemic to Lake Malawi.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturiteit: Lm 29.0, range 25 - ? cm
Max length : 36.0 cm SL mannelijk / geslacht onbekend; (Ref. 4967)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 15 - 17; Dorsale zachte stralen (totaal) : 10 - 11; Anale stekels: 3; Anale zachte stralen: 8 - 10; Wervels: 30 - 32. Breeding males black, in some with white or yellowish dorsal lappets. Testes broad, white and sinuous when fully ripe. Lower pharyngeal toothed area with concave sides; median length of bone 1.2-1.3 times its width and 35.5-39.2 % length of head; blade 1.3-2.1 times median length of toothed area. Caudal fin scaly.
Body shape (shape guide): fusiform / normal.
Occurs at a temperature range of 21.5-29.0 °C (Ref. 2). Inhabits very shallow and vegetated regions. Feeds on diatoms and debris collected from the bottom and from between vegetation (Ref. 5595).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Forms breeding colonies in water of 2 to 4 m depth off reedy shores.
Trewavas, E. and G.G. Teugels, 1991. Oreochromis. p. 307-346. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Checklist of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5166)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: commercieel; Aquarium: Commercieel
Tools
Speciale rapporten
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01514 (0.00690 - 0.03319), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
2.0 ±0.00 se; based on food items. |
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Generation time |
2.0 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
Weerstandsvermogen (Ref. 120179) |
Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.56-0.72; tm=3; tmax=5). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (23 of 100). 🛈 |
Prijsklasse (Ref. 80766) |
Unknown.
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