Amur stickleback

The Amur stickleback (Pungitius sinensis) is a species of fish in the family Gasterosteidae. This freshwater, brackish water, or marine benthopelagic fish is usually 6.5 cm (up to 9  cm) in length. It is widespread in East Asia: off the Korean peninsula, northeast and north China, Japan, the Kuril Islands, the Kamchatka peninsula, and the basin of the Amur River.

Amur stickleback
Conservation status
Vulnerable  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Perciformes
Family:	Gasterosteidae
Genus:	Pungitius
Species:	P. sinensis
Binomial name
Pungitius sinensis (Guichenot, 1869)
Synonyms[2]
Gasterosteus sinensis Guichenot, 1869 Pungitius pungitius sinensis (Guichenot, 1869) Pungitius sinensis sinensis (Guichenot, 1869) Pygosteus pungitius sinensis (Guichenot, 1869) Pygosteus sinensis (Guichenot, 1869) Pygosteus kaibarae Tanaka, 1915 Pungitius kaibarae (Tanaka, 1915) Pungitius sinensis kaibarae (Tanaka, 1915)