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Rhamphochromis esox (Boulenger, 1908)

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Rhamphochromis esox
Picture by Dubosc, J.


Malawi country information

Common names: Mcheni, Nthamfya, Nthmafya
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Also Ref. 5595, 5689.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mi.html
National Fisheries Authority: http://isp.msu.edu/AfricanStudies/Plea/mfri.htm
Occurrences: Occurrences Point map
Main Ref: Turner, G.F., R.L. Robinson, P.W. Shaw and G.R. Carvalho, 2004
National Database:

Common names from other countries

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Rhamphochromis: Greek, rhamphos = bill, peak + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
  More on author: Boulenger.

Issue
Quote Turner et al. (Ref. 55949): "We consider that both R. leptosoma and R. melanotus are probably junior synonyms of R. esox. If this is accepted, R. esox can be considered the most distinctive and readily identified species of the genus."

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

; пресноводный демерсальный; pH range: 7.4 - 8.5; dH range: 5 - 30; пределы глубины 2 - 65 m (Ref. 55949).   Tropical; 23°C - 27°C (Ref. 13614); 9°S - 15°S

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

Africa: Endemic to Lake Malawi.

Length at first maturity / Size / Вес / Возраст

Maturity: Lm ?, range 19 - ? cm
Max length : 42.0 cm SL самец/пол неопределен; (Ref. 55949)

Краткое описание определительные ключи | морфология | морфометрия

Diagnosis: elongated and very streamlined shape; body in cross-section more rounded than congenerics; frequently exhibits a horizontal stripe (Ref. 55949).

биология     глоссарий (например epibenthic)

Inhabits the open water (Ref. 5595). Widely distributed in shelf and rocky reef zones, usually where the bottom is fairly shallow; rarely found offshore; small juveniles widely distributed in the littoral zone in swampy, sandy and rocky habitats; adults regularly encountered near sandy beaches in the shallows (Ref. 55949). Feeds on fish species like the small Utaka and the lake sardine Usipa (Engraulicypris sardella) (Ref. 5595).

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

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

Maréchal, C., 1991. Rhamphochromis. p. 422-424. 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. 5689)

Статус Красного Списка МСОП (Ref. 130435)


CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

  Harmless




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рыболовство: коммерческий; аквариум: коммерческий
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дополнительная информация

Trophic ecology
пищевые объекты
Diet compositions
Food consumptions
Food rations
хищники
Ecology
экология
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Размерный состав
Mass conversions
Recruitments
Abundances
Life cycle
размножение
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
личинки
динамика численности личинок
Distribution
страны
регионы FAO
Ecosystems
места находок
интродукции
BRUVS - Videos
Anatomy
Gill areas
мозг
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
звуки, издаваемые рыбами
Diseases / Parasites
Toxicities (LC50s)
Genetics
генетика
Electrophoreses
Heritabilities
Human related
Aquaculture systems
особенности рыбоводства
степень растяжения
Ciguatera cases
Stamps, coins, misc.
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References
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.2   ±0.73 se; based on food items.
устойчивость к внешним воздействиям (Ref. 120179):  средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (41 of 100).
Категория цены (Ref. 80766):   Unknown.