Well we now have the stinking things (Snake heads) in the Susquehanna river in PA. 35 of them have been caught between Conawingo dam and the Holt wood dam. Not good for our native fish, small mouth, cat fish Crappies etc. It is illegal to release them back into the water if you catch one in PA you must kill them by law. I suspect it will not be long before they get above the Safe Harbor dam. What is the matter with people releasing these stinking all mouth and no head trash where they don't belong, they don't belong in this country period.