Carassioides acuminatus or black fish is a species of cyprinid fish in the subfamily Cyprininae. It is found in central and northern Vietnam and the Pearl River and Hainan in China. It may have been introduced into Laos. It occurs in slow flowing rivers with sandy or muddy beds. It has an omnivorous diet, including alga, insect larvae, zooplankton and organic detritus. It is sold in Vietnam for human consumption, where it valued as a food fish, and it is also used in aquaculture. References Carassioides Cyprinid fish of Asia Freshwater fish of China Fish of Vietnam Fish described in 1846 Taxa named by John Richardson (naturalist)