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Tilapia guinasana Trewavas, 1936
OTJIKOTO TILAPIA
Life   Vertebrata   Fish   Cichlidae   Tilapia


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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Tilapia guinasana Trewavas , 1936

Otjikoto tilapia Upload your photos  and  videos
Pictures | Google image Image of Tilapia guinasana (Otjikoto tilapia) Tilapia guinasana
Male picture by Dubosc, J.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tilapia: Bechuana, African native thiape = fish (Ref. 45335 ) .  More on author: Trewavas .

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

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

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 14.0 cm TL male/unsexed; (Ref. 6465 )

Biology     Glossary (e.g. epibenthic)

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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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

Main reference Upload your references | References | Coordinator : Kullander, Sven O. | Collaborators

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. 120744 )

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

CITES (Ref. 118484 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: ; aquarium: commercial FAO(Publication : search ) | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
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References
Aquaculture
Aquaculture profile
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Tools

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Special reports

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Download XML

Summary page | Point data | Common names | Photos

Internet sources

Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.01479 (0.00684 - 0.03200), b=2.98 (2.81 - 3.15), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  2.0   ±0.00 se; Based on food items. Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Vulnerability (Ref. 59153 ):  Low vulnerability (15 of 100) . Price category (Ref. 80766 ):   Unknown .

Entered by Cruz, Tess Modified by Musschoot, Tobias Fish Forum
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