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Chrysichthys walkeri Günther, 1899

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drawing shows typical species in Claroteidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | 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 生态学

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

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | 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 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 11.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 57126)

简单描述 检索表 | 型态特徵 | 形态测量图

背棘 (总数) : 2; 背的软条 (总数) : 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).

生物学特性     字汇 (例如 epibenthic)


出现于哪里是纯粹的河的半咸淡水域到上部淡水的。 主要吃孚游类， Povilla adusta 的蛹。 (参考文献 6868)

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

非洲: 迦納到卡賓達，安哥拉。

主要参考文献 Upload your references | 参考文献 | 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)

世界自然保护联盟红皮书 (Ref. 130435)

  次级保育类动物, 见 IUCN 红皮书 (VU) (B1ab(iii)); Date assessed: 14 January 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

渔业: ; 水族馆: 商业性
FAO - Publication: search | FishSource |

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Trophic ecology
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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).
营养阶层 (Ref. 69278):  3.2   ±0.40 se; based on food items.
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (K=0.72).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
价格分类 (Ref. 80766):   Unknown.