Are piranhas legal in Florida?

Prohibited Nonnative Species List

FWC Commissioners approved rule changes to Chapter 68-5, F.A.C. on February 25, 2021 which added 16 high-risk nonnative reptiles to Florida's Prohibited list. Future possession of these species by eligible entities is now limited to the purposes of research, educational exhibition, control or eradication, and for qualifying commercial use sales (green iguanas and tegus only) and pet owners (green iguanas and tegus only).

The entire subfamily Serrasalminae is prohibited in Florida due to its predatory nature, human safety concerns and their proven ability to spawn and survive in south Florida.

Freshwater Fish

Piranhas and Pirambebas
Subfamily Serrasalminae, all species of piranha and pirambeba

References

Florida Fish and Wildlife Conservation Commission Prohibited Nonnative Species List
NO PLACE FOR PIRANHA
Florida Fish: Prohibited Aquatic Fish (2)