Well, being from MD I know crofton and the patuxent well along with all what is stated. Living in Flordia for a number of years I can fill you in, the snakeheads in Fl are the bullseye, but I am sure they spawn the same, they have a big ball of a good number of fry they guard, they are small and can go through storm drains, small streams etc.......As far as florida is concerned, they don't really do any different or kill everything like they are said to.....Bass, gars and bowfin eat baby snakeheads as do birds and turtles. Gators eat bigger ones....But these are northerns here in ga same as MD, I think yeah they aren't good and hope they don't get prevelant here in GA. I am not sure there would be enough other animals to eat them. I also think they are more in the Potomac because it is a dirtier and slower water body. As far as they go in FL they are more in the canals and ponds in dirty slack water. I never really hear anyone landing them in the glades or O. You will though see folks catch more bowfin, oscars, myans and jaguars in the glades....