13123 Acestrorhynchus falcirostris (Cuvier, 1819) Acestrorhynchidae Smallscale pike characins Acestrorhynchinae Characiformes Teleostei South America: Amazon and Orinoco River basins and rivers of Guyana. AMNH 12737 Acestrorhynchus falcirostris AMNH 21506 Acestrorhynchus falcirostris IGFA 8 S 35 W Acestrorhynchus falcirostris IGFA 21 S 42 W Acestrorhynchus falcirostris AMNH 4393 1912 Acestrorhynchus falcirostris AMNH 218017 1926 Acestrorhynchus falcirostris AMNH 39906 1964 Acestrorhynchus falcirostris AMNH 221373 1977 Acestrorhynchus falcirostris AMNH 221388 1977 Acestrorhynchus falcirostris AMNH 221347 1978 Acestrorhynchus falcirostris AMNH 230880 1999 Acestrorhynchus falcirostris