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Oreochromis saka (Lowe, 1953)

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Oreochromis saka
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Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).

Issue
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).

Environment: milieu / climate zone / depth range / distribution range Écologie

; eau douce benthopélagique. Tropical; 9°S - 15°S

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Africa: Endemic to Lake Malawi.

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 29.0, range 25 - ? cm
Max length : 36.0 cm SL mâle / non sexé; (Ref. 4967)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 15 - 17; Rayons mous dorsaux (Total) : 10 - 11; Épines anales: 3; Rayons mous anaux: 8 - 10; Vertèbres: 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.

Biologie     Glossaire (ex. epibenthic)

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).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Forms breeding colonies in water of 2 to 4 m depth off reedy shores.

Référence principale Upload your references | Références | Coordinateur : Kullander, Sven O. | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Non évalué 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial; Aquarium: Commercial
FAO - Publication: search | FishSource |

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Trophic ecology
Éléments du régime alimentaire
Diet compositions
Food consumptions
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Prédateurs
Ecology
Écologie
Population dynamics
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Length-weight rel.
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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.00707 - 0.03555), b=2.97 (2.79 - 3.15), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  2.0   ±0.00 se; based on food items.
Generation time: 2.0 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Résilience (Ref. 120179):  Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.56-0.72; tm=3; tmax=5).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (23 of 100).
Catégorie de prix (Ref. 80766):   Unknown.