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Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Osteichthyes
Classis: Actinopterygii
Subclassis: Neopterygii
Infraclassis: Teleostei
Superordo: Ostariophysi
Ordo: Characiformes
Familia: Acestrorhynchidae
Genus: Acestrorhynchus
Species: A. abbreviatus - A. altus - A. britskii - A. falcatus - A. falcirostris - A. grandoculis - A. heterolepis - A. isalineae - A. lacustris - A. maculipinna - A. microlepis - A. minimus - A. nasutus - A. pantaneiro


Acestrorhynchus Eigenmann & Kennedy, 1903


Acestrorhynchus ("needle jaw" ) is a genus of about 15 species of characiform fish found only in freshwater in South America, the sole genus in the family Acestrorhynchidae. Their greatest diversity is in the Orinoco and Amazon basins.

These fish have elongate pike-like bodies and large conical teeth, adapted for predation on other types of fish. They are sometimes referred to as freshwater barracuda in the aquarium trade, although the name is used of other characins as well. They range from 35 to 400 mm in length.

Common names are Cachorinho, Cachorro, Mopiye, Payala, Pejezorro, Pez cachorro, Pez zorro, Pike Characin, Moinge, Halatawéi, Halataway, Dagu fisi, Ueua, Wayabra, Zadoe, Freshwater Barracuda, saicanga, branca, cajaba, cachorra magra, cadelinha.

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