A swamp darter is a fish native to your area (and mine) and is found in typically swampy stagnant areas, although I've also found them in fairly clear water creeks among vegetation. I don't think that the darters local to this area (except the ones found around the aquifer) are cold water only, but most others are, like my favorite, the rainbow darter.
There are a few other more colorful variants that I've found as well, but florida really doesn't have much diversity for darters like they do up north.
swamp darter (Etheostoma fusiforme) - FactSheet