Usual Size: 12 cm
Medium-sized goby (a family of small fishes with a notorious reputation of being difficult to differentiate, characterised by a pair of dorsal fins, and a pelvic fin fused into a weak suction cup). The first dorsal fins are never elongate in this species (see Gobius niger). Black with white blotches which makes it appear grey. In breeding coloration the white fringe to the first dorsal fin is distinctive.
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