Fin's Fish Guide
The Bigmouth gudgeon goby (Gymnogobius macrognathos) is a brackish-water fish of the family Gobiidae that grows up to 16 cm.
East Asia (Japan and Korea), in brackish river mouths, estuaries and the lower reaches of rivers.
Description
The bigmouth gudgeon goby is a small goby of the family Gobiidae (gobies) reaching about 16 cm. The stocky, brown, faintly blotched body has a notably large mouth, especially in the male, and, like all true gobies, the pelvic fins fused into a sucker. The species comes from Japan and Korea and lives in brackish river mouths, estuaries and the lower reaches of rivers, where it tolerates strongly varying salinities. On the bottom it searches for small crustaceans, worms and insect larvae. In spring the male guards the eggs laid under a stone or shell. Because of its small size it has no fishery value, but it is a link in the estuarine food web.
Frequently asked questions
How do you recognise the Bigmouth gudgeon goby?
The Bigmouth gudgeon goby has a torpedo-shaped body, is mainly brown and shows a spots pattern. Small goby with a large mouth (especially in the male) and pelvic fins fused into a sucker; lives in brackish river mouths.
Where does the Bigmouth gudgeon goby live?
The Bigmouth gudgeon goby lives in brackish water and is mostly found around sand or mud bottom. East Asia (Japan and Korea), in brackish river mouths, estuaries and the lower reaches of rivers.
How big does the Bigmouth gudgeon goby get?
The Bigmouth gudgeon goby grows to a maximum of about 16 cm.
Is the Bigmouth gudgeon goby dangerous to humans?
No, the Bigmouth gudgeon goby is harmless to humans. None required: this species is harmless to humans.
Is the Bigmouth gudgeon goby edible?
The Bigmouth gudgeon goby is not usually eaten.
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Same genus Gymnogobius
More from the family Gobiidae
Want the complete picture on the Bigmouth gudgeon goby?
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