Smallhead stickleback

The smallhead stickleback (Gasterosteus microcephalus) is a stickleback. Some authorities think it is a synonym of Gasterosteus aculeatus or a subspecies of that taxon.

 References 

 Froese, Rainer; Pauly, Daniel (eds.) (2022). "Gasterosteus microcephalus" in FishBase. August 2022 version.

Category:Animals of Japan
Category:Scorpaeniformes
Category:Taxa described in 1854