The botos are a
paraphyletic group, defined largely by their
evolutionary convergences. The genus
Sotalia is divided into two
species. The
Guiana dolphin (
S. guianensis) is distributed in the Atlantic, from Tramandaí, Rio Grande do Sul, Brazil, and northwards. The
tucuxi (
S. fluviatilis) lives in the
rivers of the Amazon.
Burmeister's porpoise is marine and lives from Santa Catarina to the south. The
Amazon river dolphin (
Inia geoffrensis) thrives in fresh water, is endemic to the
Amazon basin, and is placed in the
Endangered category of the IUCN. The
Araguaian river dolphin (
I. araguaiaensis) is a newly identified species native to the
Araguaia-
Tocantins basin of
Brazil. The
La Plata dolphin (
Pontoporia blainvillei), another vulnerable Brazilian denizen, is a
marine river dolphin that ranges from
Espírito Santo, Brazil, to the south. • Suborder
Odontoceti • Superfamily
Delphinoidea • Family
Delphinidae • Genus
Sotalia • Species
Sotalia fluviatilis, tucuxi • Species
Sotalia guianensis, costero • Family
Phocoenidae • Genus
Phocoena • Species
Phocoena spinipinnis, Burmeister's porpoise • Superfamily
Platanistoidea • Family
Iniidae • Genus
Inia • Species
Inia araguaiaensis • Species
Inia geoffrensis • Subspecies
Inia geoffrensis geoffrensis, Amazon river dolphin • Subspecies
Inia geoffrensis boliviensis, Bolivian river dolphin • Subspecies
Inia geoffrensis humboldtiana, Humboldt's river dolphin • Family
Pontoporiidae • Genus
Pontoporia • Species
Pontoporia blainvillei, la Plata dolphin or Franciscana ==Folklore==