Abramis, Genus
Actinopterygii, Classis
Agonidae, Familia
Agonus, Genus
Alosa, Genus
Ammodytes, Genus
Ammodytidae, Familia
Anguilla, Genus
Anguillidae, Familia
Anguilliformes, Ordo
Animalia, Regnum
Aphia, Genus
Argentina, Genus
Argentinidae, Familia
Arnoglossus, Genus
Atherina, Genus
Atherinidae, Familia
Atheriniformes, Ordo