River goby (Awaous commersoni)

Scientific name: Awaous commersoni Schneider, 1801

The River goby (Awaous commersoni) is a freshwater fish of the family Gobiidae. Native range: Africa, Mauritius, Reunion and Comoros. Species known only by the description of Commerson. Tentatively placed in the genus Gobius, a catch-all genus.

Biology

Dorsal spines (total): 7; Dorsal soft rays (total): 10-11; Anal spines: 1; Anal soft rays: 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.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Awaous commersoni
Family
Gobiidae (Gobies)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
25.0
Environment
Freshwater; brackish; benthopelagic; amphidromous
Climate
Tropical
Distribution
Africa: Mauritius, Reunion and Comoros. Species known only by the description of Commerson. Tentatively placed in the genus Gobius, a catch-all genus.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries:
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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