1657 Pristigaster cayana Cuvier, 1829 Pristigasteridae Pristigasterids Clupeiformes Teleostei Amazon hatchet herring South America: Amazon drainage (from perhaps mouth of Rio Branco at Goiaçu, Rio Solimões, Rio Juruá and as far as the Río Ucayali in Peru). (There are possibly two species, judging from specimens in the Museu de Zoológia, Sao Paulo). FB 2736829 Pristigaster cayanus AMNH 10186 1924 Pristigaster cayana FISH 386802 13 S 50 W 1994 Pristigaster cayana 2 - 5 m GCRL 29800 1999 Pristigaster cayana