The species was found in the lower reaches of Han River in Gyeonggi-do, Korea.

The two groups are differentiated by the characteristics of the species' second antenna; first gnathopod, an appendage modified for feeding; uropods and pereopods.

[1] Named after the locality where Sinocorophium hangangense were first discovered, they are usually found in the blackish water regions and downstream in rivers where salinity is lower.

Alongside Han River in Gyeonggi-do, they are also found in parts of Paju-si, Gyoha-eup and Songchon-ri, Korea.

[1][2] Being a part of the genus Sinocorophium, S. hangangense has a cylindrical body with second antenna resembling the shape of the crustacean's foot with ventrodistal tooth.

[1] When preserved in alcohol, the body of the species is yellowish grey with a light brownish color between antennae and urosomites, the color reticulate pattern dorsally significantly the pereonities with light brown longitudinal rows.

[1] With distally pointed rostrum, triangular in dorsal view, the head of the species is longer than pereonite 1.

After preservation in alcohol the eyes are transparent, but the cephalic lobe is observed to be sharply produced.