''Acheilognathus rhombeus'' is a

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout ...

freshwater

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of ...

belonging to the

Acheilognathinae The bitterling-like cyprinids form the cyprinid subfamily Acheilognathinae. This subfamily contains four genera, although the Khanka spiny bitterling is often placed in ''Acheilognathus'', and at least 71 described species to date. Over half of t ...

sub-family of the family Cyprinidae. It originates in Japan and the

Korean Peninsula Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...

. It was originally described as ''Capoeta rhombea'' by Temminck & Schlegel in 1846. It is the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specime ...

for the genus ''Acheilognathus''. When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.

References

* Acheilognathus Fish described in 1846 {{Acheilognathinae-stub