Onychostoma alticorpus (common name: Taiwan ku fish) is a species of ray-finned fish in the family Cyprinidae. It can grow to 50cm (20inches) TL, but commonly only to about half of that.[1]
Onychostoma alticorpus is endemic to Taiwan where it is known from only five river basins. It is a herbivorous species that occurs in streams. As with other riverine species, its habitat can be threatened by siltation, dam building, and pollution.[1]