Coryogalops william (Smith, 1948)
Kaalpens goby

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  6.2 cm TL (male/unsexed)
Environment:  demersal; freshwater; brackish; marine, amphidromous
Distribution:  Western Indian Ocean: from Xora River mouth, South Africa, to Inhaca Islands, Mozambique (Ref. 4343).
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 10-11; Anal spines: 1-1; Anal soft rays: 9-9. Description: Prepelvic and midline of belly naked (Ref. 2798). Gill rakers on upper limb 3, gill rakers on lower limb 5-6 (Ref. 2798). Dorsal fin with 7 spines and 10-11 soft rays; anal fin with 1 spine and 9 soft rays; pectoral fin with 22-23 rays (Ref. 2798). Scales on lateral line 31-34 (Ref. 2798).

Colouration: Colour variable, usually dark with darker scale edges; dark crescent at caudal-fin base (Ref. 2798).

Biology:  Found in intertidal areas, entering estuaries and freshwater (Ref. 4343).
IUCN Red List Status: Least Concern (LC); Date assessed: 19 June 2017 Ref. (130435)
Threat to humans:  harmless


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