That is a flying Candiru. Vandellia cirrhosa. Read this article, it will tell you what you should do about it. Be sure to scroll down...the picture you see of the wet thing in the guy's hand is just the Brazilian larvae (mistakenly called a "fish" there). It molts and they migrate up through Caribbean islands. Read the section on "Food" and the parasitic nature of the animal, important to know.
Funny, didn't know they'd made it to mainland US. You being serious, this was in your house in Florida?
Funny, didn't know they'd made it to mainland US. You being serious, this was in your house in Florida?