Tanzania country information

Common names: Chambo, Kasawala, Ling'ara
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Eccles, D.H., 1992
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Lake Nyasa [= Lake Malawi] (Ref. 4967) and its catchment (Ref. 118630, 118638), including crater lakes Kingiri, Ilamba and Massoko (Ref. 118638).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tz.html
National Fisheries Authority: http://www.isp.msu.edu/AFRICANSTUDIES/PLEA/TAFIRI.HTM
Occurrences: Occurrences Point map
Main Ref: Shechonge, A., B.P. Ngatunga, S.J. Bradbeer, J.J. Day, J.J. Freer, A.G.P. Ford, J. Kihedu, T. Richmond, S. Mzighani, A.M. Smith, E.A. Sweke, R. Tamatamah, A.M. Tyers, G.F. Turner and M.J. Genner, 2018
National Database:

Common names from other countries

鳞翅口孵非鲫, Mang'ara, Zeya, ... more

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | 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).
More on author: Günther.

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

; пресноводный донно-пелагический. Tropical; 9°S - 15°S

распространение страны | регионы FAO | Ecosystems | места находок | Point map | интродукции | Faunafri

Africa: Lake Malawi and its catchment (Ref. 118630), including crater lakes Kingiri, Ilamba and Massoko (Ref. 118638) and Upper Shire River (Ref. 37112).

Length at first maturity / Size / Вес / Возраст

Maturity: L_m 26.9, range 20 - 37 cm
Max length : 36.0 cm SL самец/пол неопределен; (Ref. 4967)

Краткое описание определительные ключи | морфология | морфометрия

колючие лучи спинного плавника (общее число) : 16 - 17; членистые (мягкие) лучи спинного плавника (общее число) : 10 - 11; колючие лучи анального плавника: 3; членистые (мягкие) лучи анального плавника: 8 - 10. Diagnosis: A heavily-built large tilapia species with a wide rounded head; dwarf populations exist in some crater lakes, showing bony 'hunger-form' body shape (Ref. 118638). Females and juveniles with grey bodies and 6 or more vertical bars; males have a bright blue, occasionally white or green, 'mask' across the head; when fully ripe, the underside of most of the body can be black, with the upper surface a conspicuous white to pale blue; genital tassel can be long and branched, pinkish to bright yellow; females and non-territorial males are indistinguishable from Oreochromis karongae (Ref. 118638).

A semi-pelagic species (Ref. 4967), found in all kinds of habitats but seen mostly in shallow water; it is abundant in the southeastern arm of Lake Malawi, where it occurs in shallow, vegetated bays (Ref. 5595). It feeds on phytoplankton and sometimes from the sediment on the sand; diatoms constitute the major part of its diet (Ref. 5595). Major component of the fisheries catch in Lake Malawi (Ref. 118638). IUCN conservation status is endangered, due to declining population trend (Ref. 118638).

Life cycle and mating behavior Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки

Mating behavior includes the T-stand, both partners alternately forming the horizontal part of the T. Eggs are laid in batches and immediately picked up by the female. Fertilization takes place both on the ground and in the mouth. Females brood eggs/young, guarding their fry until about 15 mm (Ref. 2781).

Основная ссылка Upload your references | ссылки | координатор : Kullander, Sven O. | соавторы

Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)

Статус Красного Списка МСОП (Ref. 130435)

В критическом состоянии (CR) (A2d); Date assessed: 22 May 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

Harmless

Использование человеком

рыболовство: коммерческий; аквариум: коммерческий

FAO(Publication : search) | FishSource |

дополнительная информация

Trophic ecology
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Food consumptions
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Ecology
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Резюмирующая страница | Point data | народные названия | Фото

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01698 (0.00875 - 0.03297), b=2.98 (2.82 - 3.14), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.1 ±0.00 se; based on food items.

устойчивость к внешним воздействиям (Ref. 120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (K=0.24-0.45; tm=3).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (38 of 100).

Категория цены (Ref. 80766): Unknown.

Oreochromis squamipinnis (Günther, 1864)