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Chrysichthys walkeri Günther, 1899

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No image available for this species;
drawing shows typical species in Claroteidae.

Senegal country information

Common names: [No common name]
Occurrence: questionable
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Reported from the Casamance (Ref. 33587), but not confirmed in Ref. 7324 or 57126; probably a misidentification.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sg.html
National Fisheries Authority: http://www.refer.sn/sngal_ct/eco/oeps/
Occurrences: Occurrences Point map
Main Ref: Pandaré, D., S. Niang, H. Diadhiou and B. Capdeville, 1997
National Database:

Common names from other countries

Catfish, Mâchoiron, Kuilkeka, ... more

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Siluriformes (Catfishes) > Claroteidae (Claroteid catfishes) > Claroteinae
Etymology: Chrysichthys: Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335).
  More on author: Günther.

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

; 淡水 居於水底的.   熱帶; 20°C - 25°C (Ref. 2059); 5°N - 3°N

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Africa: endemic to the Pra basin in Ghana; other reports from West Africa unconfirmed (Ref. 7324, 57126). Identifications of C. walkeri in Lower Guinea appear to be misidentifications of mature male of C. auratus, or of C. aluuensis or C. thysi (Ref. 81642).
非洲: 迦納到卡賓達，安哥拉。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 11.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 57126)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 2; 背的軟條 (總數) : 6; 臀棘: 0. Diagnosis: nasal barbell long, reaching to anterior margin of orbit; first branched dorsal-fin ray longest, but never filamentous; adipose fin long, its base longer than that of dorsal fin; 9 branched rays in pectoral fin; 12-13(15) gill rakers on lower limb of first gill arch (Ref. 57126).

生物學特性     字彙 (例如 epibenthic)


出現於那裡是純粹的河的半鹹淡水域到上部淡水的。 主要吃孚游類， Povilla adusta 的蛹。 (參考文獻 6868)

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

非洲: 迦納到卡賓達，安哥拉。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Risch, L.M., 2003. Claroteidae. p. 60-96 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57126)

IUCN 瀕危狀態 (Ref. 130435)

  次級保育類動物, 見 IUCN 紅皮書 (VU) (B1ab(iii)); Date assessed: 14 January 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




人類使用

漁業: ; 水族館: 商業性
FAO(Publication : search) | FishSource |

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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=0.01000 (0.00579 - 0.01726), b=3.02 (2.87 - 3.17), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.2   ±0.40 se; based on food items.
回復力 (Ref. 120179):  高度, 族群倍增時間少於 15個月 (K=0.72).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
價格種類 (Ref. 80766):   Unknown.