Awaous commersoni, Commerson’s freshwater goby

Awaous commersoni (Schneider, 1801)

Commerson’s freshwater goby
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drawing shows typical species in Gobiidae.

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

Actinopteri > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobionellinae
  More on author: Schneider.

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

; 淡水; 半咸淡水 底中水层性; 非产卵性溯降河的 (Ref. 57749).   熱帶

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

Southwestern Indian Ocean: Réunion, Mauritius, Rodrigues, Comores, Madagascar.
非洲: 模里西斯。 只有藉由被知道的種 Commerson 的描述。 暫時地放在本屬 Gobius 之內了, 捕捉-所有的屬。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 57749)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 7; 背的软条 (总数): 10-11; 臀棘 1; 臀鳍软条: 9 - 10. Large head. Fusiform body. Large and terminal mouth. Two dorsal fins. First with 6 spines, second with 1 spine and 10 to 11 branched rays. Adults body and fins usually grey to black with a clearer belly. Juveniles brown with a serie of darker rounded marks along the flanks. First dorsal usually shows a black mark in its posterior part, especially for young specimens. Fading while fish age. 10 to 25cm (Ref. 57749).

生物学特性     字汇 (例如 epibenthic)

This species occurs in freshwaters and sometimes brackish waters in slow to fast current waters to the base of the first falls. Usually occurs in clear waters with sand, gravel or rock bottom. Feeds on algae, detritus, worms, gastropods and crustaceans. Close biology to A. guamensis. Amphidromous species. Adults migrate to the mouth of the rivers for reproduction. Females spawn on the rocks' surface where the males fecund the eggs. Males protect the eggs until they hatch (incubation lasts 24 to 70hrs). Larvae, translucid, are then carried into estuaries or sea. They come back after they spent 150 to 165 days in seawaters (Ref. 57749). Also Ref. 4343.

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

非洲: 模里西斯。 只有藉由被知道的種 Commerson 的描述。 暫時地放在本屬 Gobius 之內了, 捕捉-所有的屬。

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

Keith, P., G. Marquet, P. Valade, P. Bosc and E. Vigneux, 2006. Atlas des poissons et des crustacés d'eau douce des Comores, Mascareignes et Seychelles. Muséum national d’Histoire naturelle, Paris. Patrimoines naturels, 65:250p. (Ref. 57749)

世界自然保护联盟红皮书 (Ref. 123251)

  次级保育类动物, 见 IUCN 红皮书 (VU) (B1ab(iii)+2ab(iii)); Date assessed: 25 June 2018

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

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网络资源

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00365 - 0.01726), b=3.11 (2.93 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  2.2   ±0.1 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  中等的, 族群倍增时间最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
脆弱性 (Ref. 59153):  Moderate vulnerability (40 of 100) .