Oreochromis korogwe  (Lowe, 1955)

Korogwe tilapia
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Oreochromis korogwe
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).

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

; sötvatten; brackvatten bentopelagisk.   Tropical

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Africa: Lower part of Pangani River and neighbouring Zigi River in Tazania and Kenya (Ref. 2, 52331, 118630). Introduced in Mlingano dam, south of Pangani River, and probably other dams in coastal zone of Tanzania (Ref. 2, 54836). Also in Lake Rutamba, Lake Nambawala and Lake Mitupa near Lindi in southeast Tanzania (Ref. 118630, 118638).

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 16.1 cm SL hane/ej könsbestämd; (Ref. 52331)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 16 - 18; Mjukstrålar i ryggfenan (totalt): 9-11; Taggstrålar i analfenan 3-4; Mjukstrålar i analfenan: 9 - 11; Ryggkotor: 29 - 30. Diagnosis: A small bodied tilapia (Ref. 118638). About 50% of individuals have IV anal spines, the modal numbers of vertebrae (29), dorsal rays (27) and gill-rakers (15) are low, and the jaws of breeding males are enlarged (Ref. 2). Females, subadult males and juveniles with a silver/grey flank colour, light ventral colour, and characteristic melanin pattern of 7-9 broken vertical stripes on the dorsal side giving a spotted appearance; males darker, with a series of white spots/bars on the flanks; ripe males have red margins on dorsal and caudal, with a reddish tinge to the pectoral fins; males from southern populations showed a bluish sheen and less contrasting male colouration (Ref. 118638). In breeding males the throat and chest are black and broad dark vertical bars are conspicuous on the lower half of the body (Ref. 2, 4967, 54096).

Biologi     Ordlista (t.ex. epibenthic)

A maternal mouthbrooder (Ref. 118638). There is evidence of hybridization with native Oreochromis jipe in northern Tanzania, and non-native O. niloticus in southern Tanzania (Ref. 118638). Of only minor importance to artisanal fisheries (Ref. 118638). Maximum standard length of 18 cm (Ref. 4967) is not confirmed (Ref. 2, G.F. Turner pers. comm.); maximum total length reported as 20.8 cm (Ref. 2, 118638).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

A maternal mouthbrooder (Ref. 118638).

Main reference Upload your references | referenser | Koordinator : Kullander, Sven O. | Medarbetare

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. 119314)

  Least Concern (LC) ; Date assessed: 31 January 2006

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: ; Vattenbruk: trolig framtida användning
FAO(Publication : search) | FishSource |

Ytterligare information

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Special reports

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Internet-källor

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Tree of Life | Wikipedia(Go, sök) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.00704 - 0.03738), b=3.02 (2.82 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.2   ±0.40 se; Based on food items.
Resiliens (Ref. 69278):  Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (23 of 100) .
Price category (Ref. 80766):   Unknown.