Oreochromis rukwaensis (Hilgendorf & Pappenheim, 1903)

Lake Rukwa tilapia

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Cichlidae \| Pseudocrenilabrinae
Synonyms	Tilapia nilotica rukwaensis, Sarotherodon rukwaensis, Tilapia rukwaensis, ... more
Common names	Perege, Rukwantilapia, 鲁夸湖口孵非鲫, ... more

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Image of Oreochromis rukwaensis (Lake Rukwa tilapia)

Picture by Seegers, L.

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Main reference

Trewavas, E. 1983. (Ref. 2)
Other references | Biblio | Coordinator : Kullander, Sven O. | Collaborators

Size / Weight / Age

Max length : 33.0 cm SL male/unsexed; (Ref. 4967)

Environment

Benthopelagic; freshwater

Climate / Range

Tropical; 7°S - 9°S

Africa: Lake Rukwa in Tanzania.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 11 - 13; Anal spines: 3; Anal 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.

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).


IUCN Red List Status (Ref. 57073)	Threat to humans
Vulnerable (VU) (D2)	Harmless

Human uses
Fisheries: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate vulnerability (39 of 100)	Not marketed/unknown

Entered by Binohlan, Crispina B.

Modified by Sa-a, Pascualita

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Page last modified by : elaxamana, 15 July 2009

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