25715 Cynodon gibbus (Agassiz, 1829) Cynodontidae Dogtooth characins Characiformes Teleostei South America: Amazon and Orinoco River basins and rivers of Guyana. AMNH 17634 Cynodon gibbus AMNH 220504 Cynodon gibbus AMNH 221077 1924 Cynodon gibbus AMNH 32485 1924 Cynodon gibbus AMNH 220469 1937 Cynodon gibbus AMNH 220478 1937 Cynodon gibbus AMNH 77340 1965 Cynodon gibbus AMNH 217662 1979 Cynodon gibbus AMNH 72950 1983 Rhaphiodon gibbus AMNH 93079 1989 Cynodon gibbus FISH 386781 13 S 50 W 1994 Cynodon gibbus 2 - 5 m GCRL 29762 1999 Cynodon gibbus