Nannocharax signifer : fisheries

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Nannocharax signifer Moritz, 2010

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drawing shows typical species in Distichodontidae.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335);  signifer: The Latin word signifer meaning 'colour sergeant' or 'standard bearer' refers to the unusual red-orange colour on the dorsal fin; a noun in apposition (Ref. 85591).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 居于水底的; pH range: 7.0 - 7.4. 28°C - 29°C (Ref. 85591)

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Africa: Ouémé River basin in Benin (Ref. 85591).

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 5.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 85591)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 背的软条 (总数): 12-14; 臀棘 0; 臀鳍软条: 10 - 11; 脊椎骨: 38 - 39. Diagnosis: Nannocharax signifer is distinguished from all other Nannocharax species in West Africa by the red-orange colouration of the anterior part of its dorsal fin (Ref. 85591). The combination of the following characters is also diagnostic: no continuous black band along the flank; multiple x-shaped body colour pattern extending on the lower half of the flank; 46-48 lateral line scales; and 4-5 scales between anus and origin of anal fin (Ref. 85591).

生物学特性     字汇 (例如 epibenthic)

Found in a narrow forest stream with dense vegetation on its banks and with bottom substrate of mud, sand, leaves, roots and drift wood; also found in larger streams with only spare vegetation in the form of small bushes and solitary trees and with bottom substrate consisting mainly of sand and gravel (Ref. 85591).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Moritz, T., 2009. Nannocharax signifer, a new species of fish (Characiformes: Distichodontidae) from the Ouémé River basin, Benin. Ichthyol. Explor. Freshwat. 20(4):289-294. (Ref. 85591)

世界自然保护联盟红皮书 (Ref. 130435)

  不评价 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

 





人类利用

渔业:
FAO - Publication: search | FishSource |

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网络资源

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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=0.00380 (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).
营养阶层 (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).