Amur stickleback

{{Short description|Species of fish}}

{{Speciesbox

| image = Pungitius sinensis.jpg

| image_upright = 1.1

| image_caption =

| status = VU

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Martins, J. |author2=Wiswedel, S. |name-list-style=& |year=2015 |title=Pungitius sinensis |page=e.T19915743A19915756 |doi=10.2305/IUCN.UK.2015-2.RLTS.T19915743A19915756.en |access-date=29 November 2022}}

| taxon = Pungitius sinensis

| authority = (Guichenot, 1869)

| synonyms = {{Specieslist

| 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)

}}

| synonyms_ref = {{FishBase|Pungitius|sinensis|month=August|year=2022}}

}}

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.