Oreochromis andersonii, Three spotted tilapia : fisheries, aquaculture, gamefish

Oreochromis andersonii (Castelnau, 1861)

Three spotted tilapia
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Oreochromis andersonii
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Classificazione / Nomi Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335)andersonii: Named for the Swede Charles John Anderson, who explored Namibia during the middle of the 19th century (Ref. 13337).
Eponymy: Charles John Andersson (1827–1867) aka Karl Johan Andersson explored Southwest Africa (Namibia) in the 19th century. [...] (Ref. 128868), visit book page.
More on author: Castelnau.

Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione Ecologia

; acqua dolce; salmastro benthopelagico; distribuzione batimetrica 0 - 10 m (Ref. 54002), usually 3 - 6 m (Ref. 54002). Tropical; 18°C - 33°C (Ref. 3); 12°S - 21°S

Distribuzione Territories | Aree FAO | Ecosistemi | Presenze | Mappa dei ritrovamenti | Introduzioni | Faunafri

Africa: Ngami basin, Okavango River; Cunene River and Mossamedes, Angola; upper Zambezi, Kafue River; middle Zambezi, Lake Kariba and Cabora Bassa since construction of dams. Several countries report adverse ecological impact after introduction (2265). Also reported from the Kasai system in Angola (Ref. 120641). Reported as introduced in Kasanka National Park (upper Congo River basin) in Zambia (Ref. 95585).

Lunghezza alla prima maturità / Dimensione / Peso / Età

Maturità: Lm 20.7, range 12 - 15 cm
Max length : 61.0 cm TL maschio/sesso non determinato; (Ref. 40637); peso massimo pubblicato: 4.7 kg (Ref. 40637); Età massima riportata: 13 anni (Ref. 13400)

Breve descrizione Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 15 - 18; Raggi dorsali molli (totale) : 11 - 15; Spine anali: 3; Raggi anali molli: 9 - 13; Vertebre: 30 - 32. Diagnosis: male genital papilla bluntly conical with a narrow flange slightly notched in the middle; jaws enlarged in breeding males, which in this species are normally not less than 30cm TL; scales in lateral line series 31-35, usually 32-33; scales of cheek in 3 full rows; vertebrae 30-32; total number of dorsal rays 28-31. Pectoral fin in adults 34-43% SL (Ref. 2), very long (Ref. 1904). Depth of body 40.5-50.5% SL; color-pattern of non-breeding fish and female always including 3 or 4 conspicuous mid-lateral blotches and a red margin on dorsal and caudal fins; breeding male with red margins broader and brighter and general dark, iridescent purplish-brown color of head, back and flanks, masking the blotches; no series of vertical spots or vertical stripes on caudal fin; nest a simple circular depression (Ref. 2).
Body shape (shape guide): fusiform / normal; Cross section: compressed.

Biologia     Glossario (es. epibenthic)

Occurs in both river and swamp habitats and is adapted to fairly fast-flowing rivers (Ref. 6465). Hardy, tolerating fresh and brackish water (up to 20ppt, Ref. 3), preferring slow-flowing or standing water; adults occupy deep open waters, juveniles remain inshore among vegetation (Ref. 7248, 52193). Prefers fairly deep, quiet water with some weed cover; hippo pools are a favoured retreat (Ref. 12524, 13337). Forms schools (Ref. 2, 12524, 13337). Mainly diurnal; a detritivore which feeds on fine particulate matter (Ref. 2), including algae (Ref. 246, 12524, 13337, 53992), diatoms, detritus (Ref. 7248, 52193, 53992) and zooplankton (Ref. 7248, 52193). Larger individuals also take insects and other invertebrates (Ref. 53992). Feeding regime is variable, the diet changes according to food availability (Ref. 6465). Female mouthbrooder (Ref. 87, 246, 6465, 12524, 13337). Fine angling and table species (Ref. 6465, 12524, 13337).

Ciclo vitale e comportamento di accoppiamento Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve

Spawning did not occur in ponds at a temperature below 21°C (Ref. 2). Rarely more than one brood in a season (Ref. 87, 246), but known to breed at least twice a year under pond conditions (Ref. 12524, 13337). Males excavate saucer-shaped nests (Ref. 246, 314, 6465, 12524, 13337, 54048) that can be up to 75cm in diameter and 30cm deep, using mouth and fins (Ref. 2, 314, 52307), in the center of their territory (Ref. 52307), on a sandy substrate (any vegetation is uprooted with its mouth) and in water from 1-3m deep, where they display to attract females (Ref. 12524, 13337, 54048). Up to 40 nests can be found together (Ref. 6465). Females are the primary care-givers (Ref. 52307), moutbrooding eggs, larvae and fry; multiple broods are raised during the warmer months (Ref. 7248, 52193). She lays her eggs in the concavity on top of the nest, the male fertilizes the eggs whereupon the female takes the eggs into her mouth where they are incubated; males guard the nest and females against all intruders; parental care is exercised for the first few weeks after the eggs hatch (Ref. 12524, 13337).

Riferimento principale Caricare le referenze | Bibliografia | Coordinatore : Kullander, Sven O. | Collaboratori

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))

  Vulnerabile (VU) (A3e); Date assessed: 01 March 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Minaccia per l'uomo

  Potential pest (Ref. 6465)





Usi umani

Pesca: commerciale; Acquacoltura: commerciale; Pesce da pesca sportiva: si
FAO - Sistemi di acquacoltura: production search; Publication: search | FishSource |

Informazioni ulteriori

Ecologia trofica
Articoli alimentari (prede)
Alimentazione
Consumo di cibo
Razioni alimentari
Predatori
Ecologia
Ecologia
Dinamica della popolazione
Parametri di crescita
Età massima / dimensioni massime
Rapporto lunghezza-peso.
Lunghezza-lunghezza rel.
Lunghezza-frequenze
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Maturità
Maturità/Gli occhielli sono relativi.
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Aggregazioni riproduttive
Uova
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Larve
Dinamica popolazioni larvali
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Aree FAO
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BRUVS - Video
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Tossicità (LC50)
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Diversità genetica
Legato all'uomo
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Casi di Ciguatera
Francobolli, monete, materiale vario.
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Bibliografia

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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].
Bayesian length-weight a=0.01549 (0.01205 - 0.01991), b=3.00 (2.96 - 3.04), in cm total length, based on LWR estimates for this species (Ref. 93245).
Livello trofico
(Fonte Biblio. 69278)
2.1   ±0.0 se; based on diet studies.
Resilienza
(Fonte Biblio. 120179)
Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.17-0.22; tm=4; tmax=13).
Vulnerabilità della pesca
(Ref. 59153)
Moderate vulnerability (40 of 100). 🛈
Categoria di prezzo
(Ref. 80766)
Unknown.