Yes, we have barramundi in Florida. They're raised in ponds in the the central part of the states and sold as food fish. They allow anglers to come in and fish for a hefty fee ($400 a half day).
Rick Grassett, a Sarasota charter captain, and I fished the ponds a few years ago. It was fun. The fish were strong and readily hit flies. We caught more than 30 on Clousers and Myakka Minnows on No. 2 hooks.

Grassett fighting a barramundi:

A smaller fish:

The largest of the outing: