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Oreochromis niloticus  (Linnaeus, 1758)

Nile tilapia
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Native range | All suitable habitat
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Oreochromis niloticus   AquaMaps   Data sources: GBIF OBIS
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Oreochromis niloticus
Picture by Stiassny, M.L.J.


El Salvador country information

Common names: [No common name]
Occurrence: introduced
Salinity: freshwater
Abundance: | Ref:
Importance: minor commercial | Ref: FAO, 1992
Aquaculture: commercial | Ref: FAO, 1996
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/es.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Welcomme, R.L., 1988
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Main reference

Size / Weight / Age

Max length : 60.0 cm SL male/unsexed; (Ref. 4967); max. published weight: 4.3 kg (Ref. 40637); max. reported age: 9 years (Ref. 164)

Length at first maturity
Lm 18.6, range 6 - 28 cm

Environment

Freshwater; brackish; benthopelagic; potamodromous (Ref. 51243); depth range 0 - 20 m (Ref. 32849), usually ? - 20 m (Ref. 34290)

Climate / Range

Tropical; 14°C - 33°C (Ref. 3), preferred ?; 32°N - 5°S, 17°W - 38°E

Distribution

Africa: naturally occurring in coastal rivers of Israel (Ref. 5166), Nile basin (including lake Albert, Edward and Tana), Jebel Marra, Lake Kivu, Lake Tanganyika, Awash River, various Ethiopian lakes, Omo River system, Lake Turkana, Suguta River and Lake Baringo (Ref. 2). In West Africa natural distribution covers the basins of the Senegal, Gambia, Volta, Niger, Benue and Chad, with introduced specimens reported from various coastal basins (Ref. 53405). Widely introduced for aquaculture, with many existing strains. Several countries report adverse ecological impact after introduction. The following subspecies were previously recognized: Oreochromis niloticus baringoensis, Oreochromis niloticus cancellatus, Oreochromis niloticus eduardianus, Oreochromis niloticus filoa, Oreochromis niloticus niloticus, Oreochromis niloticus sugutae, Oreohromis niloticus tana and Oreohromis niloticus vulcani.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 15 - 18; Dorsal soft rays (total): 11-13; Anal spines: 3; Anal soft rays: 9 - 11; Vertebrae: 30 - 32. Diagnosis: jaws of mature male not greatly enlarged (length of lower jaw 29-37 % of head length); genital papilla of breeding male not tassellated (Ref. 2). Most distinguishing characteristic is the presence of regular vertical stripes throughout depth of caudal fin (Ref. 4967, 53405).

Biology     Glossary (e.g. epibenthic)

Occur in a wide variety of freshwater habitats like rivers, lakes, sewage canals and irrigation channels (Ref. 28714). Mainly diurnal. Feed mainly on phytoplankton or benthic algae. Oviparous (Ref. 205). Mouthbrooding by females (Ref. 2). Extended temperature range 8-42 °C, natural temperature range 13.5 - 33 °C (Ref. 3). Maximum depth from Ref. 34290. Marketed fresh and frozen (Ref. 9987).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Potential pest



Human uses

Fisheries: highly commercial; aquaculture: commercial

Tools

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Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
2.0   ±0.0 se; Based on diet studies.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.14-0.41; tm=1-2; tmax=9; Fec < 1,000)

Vulnerability (Ref. 59153)
Low to moderate vulnerability (30 of 100)
Price category (Ref. 80766)
Unknown