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Ichthyborus besse (Joannis, 1835)

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drawing shows typical species in Distichodontidae.


Sudan (North) country information

Common names: Alekagurgur, Atem duor, Cwak
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the White Nile (Ref. 28714, 120561).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/su.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Moritz, T., Z.N. El Dayem, M.A. Abdallah and D. Neumann, 2019
National Database:

Common names from other countries

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Ichthyborus: Greek, ichthyboros, -os, -on = that eats fishes (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 外洋の.   Tropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Africa: White Nile basin (Ref. 2936, 28714), Chad basin and Benue River (Ref. 2936, 86396).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 14.0  range ? - ? cm
Max length : 25.0 cm TL オス/雌雄の選別がない; (Ref. 28714)

簡単な記述 検索表 | 形態学 | 形態計測学

Diagnosis: body depth 4.7-6.2 and head length 3.1-3.8x SL; caudal peduncle 1.5-2x longer than high; head flattened, 2.9-3.5 longer than wide; eye diameter 4-7x of head length; scale formula 12.5-14.5/90-107/13.5-14.5; single, dark, undulating longitudinal band along lateral line (not visible in live specimens); caudal-fin lobes marked with oblong black spots (Chad and Benué) (Ref. 2936, 86396).

生物学     用語集 (例 epibenthic)

Maximum TL was recorded at 24.5 cm (Ref. 7094). Inhabits open water and fringing vegetation. Feeds on Caridina and fish fry (Ref. 28714).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Gosse, J.-P. and E.J. Coenen, 1990. Distichodontidae. p. 237-260. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren and O.R.S.T.O.M., Paris, 384 p. (Ref. 2936)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 28 August 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

FAO(Publication : search) | FishSource |

より多くの情報

Trophic ecology
食品種目概要について
Diet compositions
Food consumptions
Food rations
捕食動物
Ecology
生態学
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
体長組成
Mass conversions
Recruitments
Abundances
Life cycle
繁殖
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
幼生
幼生の動力
Anatomy
Gill areas

Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
水泳形態
Swimming speeds
Visual pigment(s)
魚の音
Diseases / Parasites
Toxicities (LC50s)
Genetics
遺伝子の
Electrophoreses
Heritabilities
Human related
Aquaculture systems
水産養殖の紹介
緊張
Ciguatera cases
Stamps, coins, misc.
Outreach
協力者
Taxonomy
共通名の
類義語
形態学
形態計測学
画像
References
参考文献

用具

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インターネットの情報源

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00147 - 0.00981), b=3.11 (2.88 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.0   ±0.3 se; based on diet studies.
回復力 (Ref. 120179):  高い, 15か月以下の倍増期間の最小個体群 (K=0.6).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (23 of 100).