Namibia country information

Common names: Otjikoto tilapia, Otjikoto-kurper
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Endemic to Lake Guinas. Endangered by use and depletion of local groundwater resources and the potential impact of introduced fishes. Translocated to Lake Otjikoto, many reservoirs and several farm dams. Attractive aquarium species. Valuable for evolutionary studies (Ref. 7248). Also Ref. 6465, 27553, 27829, 52307. Known from Interior (Ref. 33857). Status of threat: critically endangered in the interior (IUCN 1994) cited in Ref. 52863. Status of threat: threatened (Ref. 54854).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/wa.html
National Fisheries Authority: http://www.benefit.org.na/
Occurrences: Occurrences Point map
Main Ref: Skelton, P.H., 1993
National Database:

Common names from other countries

吉纳非鲫, Guinas-Buntbarsch, Otjikoto-kurper, ... more

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tilapia: Bechuana, African native thiape = fish (Ref. 45335).
More on author: Trewavas.

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

; agua dulce bentopelágico; pH range: 7.0 - 7.8; dH range: ? - 15. Tropical; 22°C - 26°C (Ref. 2059); 19°S - 21°S

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Africa: endemic to Lake Guinas, Namibia. Introduced to Lake Otjikoto and several reservoirs in Namibia. Also occurs in subterranean rivers.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 14.0 cm TL macho / no sexado; (Ref. 6465)

Found in deep sinkhole lakes (100 m deep or more, e.g. introduced population in Lake Otjikoto, Namibia) with moderately clear water and with water temperatures ranging from 19 to 27°C (Ref. 6465). Omnivorous (Ref. 52307), but feeds mainly on algae and diatoms (Ref. 6465, 52307). Generally congregate, breed and feed from the near-vertical shores. Use narrow shelves for breeding, with established and defended territories, both parents guard and tend eggs. Threatened due to depletion of local groundwater resources and impact of introduced species (Ref. 7248). Individuals tend to display different color patterns ranging from pure black to mottled black and blue, pink and white (Ref. 27829). Biparental open-spawning species (Ref. 52307).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Nests are built on narrow rocky ledges and competition for these nest sites is very strong.

Main reference Upload your references | Referencias | Coordinador : Kullander, Sven O. | Colaboradores

Teugels, G.G. and D.F.E. Thys van den Audenaerde, 1991. Tilapia. p. 482-508. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5163)

IUCN Red List Status (Ref. 130435)

Critically Endangered (CR) (B1ab(iii)+2ab(iii)); Date assessed: 01 March 2007

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesquerías: ; Acuario: Comercial

FAO(Publication : search) | FishSource |

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Trophic ecology
componentes alimenticios
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Ecology
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Length-weight rel.
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Life cycle
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Distribution
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Physiology
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Genetics
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Human related
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Perfiles de acuicultura
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Stamps, coins, misc.

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Taxonomy
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References
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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Datos específicos | Nombres comunes | Photos

Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01514 (0.00700 - 0.03275), b=2.97 (2.80 - 3.14), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 2.0 ±0.00 se; based on food items.

Resiliencia (Ref. 120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Price category (Ref. 80766): Unknown.

Tilapia guinasana Trewavas, 1936