Li

E. sinensis was initially included in the genus Protomyzon where it remained until 2004 when Kottelat found sufficient geographical and morphological differences between members of the group inhabiting the island of Borneo and those from mainland East/South East Asia to warrant their separation. The genus Erromyzon was erected to accommodate the mainland fishes and there are currently three...

It's told apart from congeners by a combination of characters as follows: large scales present on body and sides of head; caudal fin deeply forked with subequal lobes; 10-13 dark, vertical bars on the body; a dark, ocellated spot in the centre of the caudal-fin base; two bars on top of head, dorsal-fin with two rows of greyish spots; caudal-fin lobes with 3-4 dark bands on each; anal-fin with one indistinct band and another, more distinct, submarginal band; ventral fins with two indistinct bands.

Very few details exist but the type locality is given as 'Yangso, Li Kiang, Kwangsi Province, southern China', which should correspond to an unspecified location within the Li River (Li Jiang) system in Guangxi Zhuang Autonomous Region, southern China. The specimens in our images were collected i...

Members of the genus are characterised by possessing a particular number of dark vertical bar on each flank, and A. parallens belongs to a group of species with five or six such bars, each of which is two scales in width. Congeners sharing this pattern include A. fasciatus, A. hemispinus (in juveniles only), A. jishouensis, A. kreyenbergii, A. paradoxus, A. spinifer, A. wenchowensis, and A. wuyiensis.