Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Cichlidae
(Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic. Tropical; 7°S - 9°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 33.0 cm SL male/unsexed; (Ref. 4967)
(total): 15 - 17;
soft rays: 10 - 11;
Vertebrae: 30. Caudal fin free of scales except basally. Scales on cheek in 2 rows. Vertebrae 30. Outer teeth bicuspid, occasionally with a few tricuspids. Breeding males mainly black with orange margins to dorsal and caudal fins; pelvic fins black or yellowish and the long genital tassels orange-yellow; iridescent marblings on gill-cover and snout.
Africa: Lake Rukwa in Tanzania.
Inhabits lakes and rivers (Ref. 4967). Males construct territories in shallow water. Where there is ample space, each territory consisted of a central raised mating platform in the middle of a large circular depression (Ref. 2).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Males construct breeding territories in shallow water, each territory consisting of a central raised mating platform at the center of a large circular depression. Males occupy territory at sunrise when water temperature was 12°C. Exhibits pseudo-spawning and true spawning.
Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00642 - 0.03734), b=3.00 (2.80 - 3.20), based on LWR estimates for this Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.1 ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100) .