Yes. Bull sharks have been known to swim far upstream in the Hudson River. A pesky fish we have here in the Great Lakes is the Gobi. The came in with sea-going freighters that dumped their ballast water here. They are quite invasive as they eat the fry of the indigenous species. I'm sure there are others; these were just examples I knew about.
This post was edited by Element 99 at June 28, 2021 7:54 PM MDT
Carp were brought here by Eastern Europeans 150 years ago and now they have become part of ecology. Odd how that works. Romania has a carp festival each year. It is considered a delicacy there. Mom brought a smoked carp home once. It was delish.