Hey, it’s not like crab isn’t a delicacy to western civilization, at least ever since trains in the US started serving lobster. Ever since we stopped thinking of them as “gross water crawlies” and started seeing them as valid gourmet food, crustaceans have become a boon to coastal communities. If these ones don’t belong here, the real issue is keeping them alive. Simply make sale of live crabs illegal and require all crabs to be cooked the same day the invasive crabs are caught (donate the extra to the homeless).