-Animals (Kingdom Animalia)

-Chordates (Phylum Chordata)

-Vertebrates (Subphylum Vertebrata)

-Ray-finned Fishes (Class Actinopterygii)

-Cichlids, Damselfishes, and Allies (Order Cichliformes)

-Damselfishes (Family Pomacentridae)

-Sergeant Damselfishes (Subfamily Glyphisodontinae)

-Sergeant Majors (Genus Abudefduf)

-Mexican Nightsergeant (Abudefduf declivifrons)

The Night Sergeant, Abudefduf taurus, is a member of the Damselfish or Pomacentridae Family, and is known in Mexico as petaca toro. The Night Sergeant is a non-migratory species that is found in shallow water over and within rocky reefs at depths up to 5 m (15 feet). They are diurnal feeders consuming primarily algae.