Flat-headed loach (''Oreonectes platycephalus'') is a species of

cyprinid Cyprinidae is a Family (biology), family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barb (fish), barbs and barbel (fish), barbels, among others. Cyprinidae is the ...

fish. It is found in fast-flowing streams in southern China (including

Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...

) and northern Vietnam. It grows to

total length Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology. Overall length Standard length (SL) is the length of a fish measured f ...

References

Oreonectes Freshwater fish of China Fauna of Hong Kong Fish of Vietnam Fish described in 1868 Taxa named by Albert Günther {{Nemacheilidae-stub