The giant barb or Siamese giant carp, Catlocarpio siamensis (Thai: กระโห้, rtgs: kraho, pronounced [krā.hôː], or กะมัน, rtgs: kaman, pronounced [kā.mān]; Khmer: ត្រីគល់រាំង, trei kól reăng; Vietnamese: cá Hô), is the largest species of cyprinid in the world. These migratory fish are found only in the Mae Klong, Mekong and Chao Phraya river basins in Indochina. It has declined drastically due to habitat loss and overfishing, and it is now considered Critically Endangered.