The fishes in this group, mainly marine, are named after the venomous land scorpions. Many of the fins are hollow, venom-conducting shafts that can inject a potential predator and inject it with powerful toxins. For humans the strength of the venoms may range from causing mild discomfort to agonizing pain to death. The various species are known as stonefish, lion fish, zebra fish, turkey cod, and scorpion fish. The stonefish produce the most dangerous toxins of the group, and have caused numerous human fatalities. There are no antivenins for these species.