“Full-grown Nile crocodiles can be 16 feet long. The team….think….Nile crocodiles can thrive in Florida.”

Nile Crocodiles Have Moved to Florida | Smart News| Smithsonian Magazine

They stalk and eat people

But what really separates them from the local boys is their aggressive nature and habit of stalking and killing large prey, including humans. They’re annually blamed for hundreds of deadly attacks in Africa.

A more dangerous crocodile surfaces in Florida | The Seattle Times

They were probably brought to the USA illegally from South Africa. They join Burmese pythons as an
alien species, which will destroy native breeds