Rhodeus sinensis

{{Short description|Species of fish}}

{{Speciesbox

| name = Rhodeus sinensis

| image = Japan fish, Rhodeus sinensis (15600774319).jpg

| image_caption =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn | author = Zhao, H. | author2 = Chen, X.-Y | name-list-style=amp | title = Rhodeus sinensis | page = e.T166120A6178327 | date = 2011 | doi = 10.2305/IUCN.UK.2011-2.RLTS.T166120A6178327.en | access-date = 15 January 2018}}

| taxon = Rhodeus sinensis

| display_parents = 3

| authority = Günther, 1868

}}

Rhodeus sinensis is a subtropical freshwater ray-finned fish belonging to the family Acheilognathidae, the bitterlings. It originated in inland rivers in China, and has been introduced as an exotic species in Afghanistan. The fish reaches a length up to {{convert|5.2|cm|in|abbr=on}}, and is native to freshwater habitats with a pH of 6.8 to 7.8, a hardness of 20 DH, and a temperature of {{convert|10|to|25|C|F}}. When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.{{FishBase | genus = Rhodeus | species = sinensis | year = 2007| month = February }}