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Traccatichthys tuberculum, new species, is herein described from the Jian-Jiang, a coastal river in Guangdong Province, South China. Photo by Bosco P.L. Chan. This new species differs from all other Chinese congeners (i.e., T. pulcher and T. zispi) in interorbital width, caudal-peduncle length, and pectoral-fin length. It, together with T. zispi, lacks the color patterns of the dorsal and anal fins in T. pulcher, and differs from T. zispi in preanal length. Traccatichthys tuberculum, together with all other Chinese congeners, is distinct from the Vietnamese species, T. taeniatus, in the shape of the black bar on the caudal-fin base, and the color pattern of the anal fin.

Traccatichthys tuberculum, a new species of nemacheiline loach from Guangdong Province, South China (Pisces: Balitoridae)