Description

Dorsal spines (total): 7; Dorsal soft rays (total): 10 - 11; Anal spines: 1; Anal soft rays: 10. Distinguished by the following characters: body colour light brown; two oblique dark bands originating on head below eye, the upper degenerating into diffuse purplish brown blotches from the pectoral to caudal peduncle; black stripe arising at the pectoral insertion and running along lower body before breaking into small black spots above anal fin; dorsal fins with a horizontal dark band near the base; dark blue mark on membrane distally between first and second rays of D2; iridescent irregular blue blotches along flanks; three or more approximately vertical bands on upper caudal; vertebrae 10+15 (vertebral counts taken from radiograph); body cylindrical; snout blunt; eyes large, and close together dorsally; origin of pectorals under posterior margin of operculum; caudal oval and elongate; 7th pectoral ray extended into a filament; pelvics united into cup-shaped disc with branched rays; origin of pelvics covered by a loose sheath of skin; scales cycloid on belly and dorsally to second dorsal origin; posterior lateral scales peripheral ctenoid; head and predorsal region naked (Ref. 45534).

Common Names

Taxonomic Hierarchy

Kingdom: Animalia

Phylum: Chordata

Class: Teleostei

Order: Gobiiformes

Family: Gobiidae

Genus: Arenigobius

Species: Arenigobius bifrenatus (Kner, 1865)

Climate Zone

Location

Biology

Facultative air-breathing (Ref. 126274); Found in muddy coastal areas to upper estuaries, rocky reefs, in sea grass beds and mangroves (Ref. 9002).

Habitat

brackish