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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).
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Tropical
Africa: Malagarasi River and marginal waters of Lake Tanganyika near Kigoma in Tanzania (Ref. 118638) and Burundi (Ref. 54847).
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 27.0 cm TL maschio/sesso non determinato; (Ref. 118638)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 16 - 17; Raggi dorsali molli (totale) : 12 - 13; Spine anali: 3; Raggi anali molli: 10 - 12; Vertebre: 29 - 30. Diagnosis: A large bodied Oreochromis, characterised by a deep body, short snout and 3-4 blotches on the flank coupled with around 6 faint wide vertical bars (Ref. 118638). It is a tasselled species, resembling Oreochromis upembae from which it differs in the following features: mid-lateral blotches present as in O. upembae, caudal fin either without spots or with a few irregularly arranged or in quincunx; caudal rays variously scaly but the inter-radial membranes usually free of scales; vertebrae 29-30; scales in lateral line series 30-32; dorsal spines XVI-XVII, soft rays 12-13; and outer teeth mainly bicuspid, but often including a few tricuspids (Ref. 2). With grey/green fins and flanks; male dorsal and caudal fins have red/orange margins; ripening males reported to be dark green-grey, possibly almost black (Ref. 118638).
Body shape (shape guide): short and / or deep; Cross section: compressed.
Inhabits rivers and swamps (Ref. 4967). It feeds on the soft, flocculent bottom deposits, which consisted of finely divided plant material and many protozoa, bacteria, algae and detritus (Ref. 2, 52307); the young were feeding on fish offal near canoe-landings (Ref. 2). A maternal mouthbrooder (Ref. 118638). A locally important species in artisanal fisheries (Ref. 118638); it contributes to swamp fishery (Ref. 4967). Recorded from aquaculture ponds near Kigoma (Ref. 118638).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
A maternal mouthbrooder (Ref. 118638). In various aquarium observations, male builds shallow spawning nests; female deposits eggs in nest; male fertilizes eggs; female takes eggs in mouth; female swallows additional sperms (Ref. 37042).
Genner, M.J., G.F. Turner and B.P. Ngatunga, 2018. A guide to the tilapia fishes of Tanzania. Martin J. Genner, George F. Turner and Benjamin P. Ngatunga, August 2018. 29 p. (Ref. 118638)
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) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01862 (0.00830 - 0.04177), b=3.02 (2.83 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Low to moderate vulnerability (28 of 100). 🛈 |