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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).
More on author: Trewavas.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce; salmastro benthopelagico; non migratori. Tropical; 7°S - 12°S
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).
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 20.3, range 18 - 22.5 cm
Max length : 23.8 cm SL maschio/sesso non determinato; (Ref. 2)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 15 - 17; Raggi dorsali molli (totale) : 11 - 14; Spine anali: 3; Raggi anali molli: 9 - 12; Vertebre: 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).
Body shape (shape guide): short and / or deep; Cross section: compressed.
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).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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.
Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Acquacoltura: sperimentale
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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0 |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (tm=1). |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (20 of 100). 🛈 |