Oreochromis mweruensis : fisheries, aquaculture

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Oreochromis mweruensis Trewavas, 1983

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Oreochromis mweruensis
Picture by Turner, G.F.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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

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

; zoetwater; brakwater benthopelagisch; standvastig.   Tropical; 7°S - 12°S

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Africa: Lake Mweru and the swamps and saline lakes in Mweru-wa-Ntipa (Ref. 2), the lower (Ref. 2, 95585) and middle (Ref. 95585) Luapula River system and the Lufira River (upper Congo River basin) in Democratic Republic of the Congo and Zambia (Ref. 2). Introduced in Lake Kivu in Rwanda (Ref. 46152).

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm ?, range 18 - 22.5 cm
Max length : 23.8 cm SL mannelijk/geslacht niet bekend; (Ref. 2)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 15 - 17; Dorsale zachte stralen (totaal): 11-14; Anale stekels 3; Anale zachte stralen: 9 - 12; Wervels: 30 - 32. Diagnosis: scales on cheek in 2-3 rows; caudal scales variable, not on the inter-radial membranes except at the base; never stiffening the fin; genital papilla large and tuberculate or scalloped, tasseled in breeding males; generally lighter or darker olive-green; breeding male iridescent dark green to blue-black on head, body and vertical fins; red edge to dorsal and caudal fins (Ref. 2).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Young Oreochromis mweruensis feed on epiphytic filamentous algae in swampy areas (Ref. 2), but also accept small invertebrates and zooplankton, a tendency they lose with age (Ref. 52307). Adults feed on filamentous algae and detritus (Ref. 52307) and bottom deposits, but those that migrated to the deeper northern end feed almost exclusively on plankton (Ref. 2).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Spawns along the banks of lakes/rivers at an average depth of 12 to 13 m. Mating territory largely occupied by a low mound with 6-12 grooves or crests radiating from the small central concave area (star-shaped nest). Males build the star-shaped nests on a sandy substrates.

Voornaamste referentie Upload your references | Referenties | Coördinator : Kullander, Sven O. | Medewerkers

Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)

Status op de Rode Lijst van het IUCN (Ref. 120744)

  Niet bedreigd (LC) ; Date assessed: 16 February 2009

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





Gebruik door de mens

Visserij: ; Aquacultuur: experimenteel
FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00744 - 0.04060), b=3.03 (2.83 - 3.23), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (tm=1).
Kwetsbaarheid (Ref. 59153):  Low vulnerability (20 of 100) .
Prijsklasse (Ref. 80766):   Unknown.