The Serrasalmidae family includes some 16 genera and 98 species. These species are classified in a number of groups including: Pacus, Piranhas and Silver Dollar.

Genera within the Serrasalmidae family and divided into groups:

Pacu’s

Acnodon
Colossoma
Ossubtus
Piaractus

True Piranha’s

Pygocentrus

Pirambeba’s

Serrasalmus
Pristobrycon
Pygopristis

Wimpel Piranha’s

Catoprion

Silver Dollars

Metynnis
Myleus
Mylesinus
Myloplus
Mylossoma

Other

Tometes
Utiaritichthys