i read something a while ago about the asian practice of selling live fish, asian carp have been sold live in asian markets prior to the 90's..
for good karma a person would buy 2 fish, and release one....
That is how most biologists believe the northern snakehead was introduced into the Potomac River. However, unlike the northern snakehead which seems to be having little affect on the fishery, not so much the case with the Asian carps.
