Saxitoxins bioaccumulate in shellfish and certain finfish. Rainbow trout farming is one of the largest finfish aquaculture industries in the U.S. The eels feed primarily off of benthic crustaceans, mollusks, finfish and worms. Current aquaculture production in South Korea is dominated by seaweeds, followed by molluscs and finfish. Consequently, welfare in aquaculture is directed at vertebrates; finfish in particular. Without oxygen, other organisms cannot survive, including economically important finfish and shellfish species. Many species are economically important to humans, including both finfish and shellfish. New Zealand does still export live finfish and shellfish. Operations for finfish and shellfish are being developed. The northern puffer feeds primarily on shellfish, and occasionally on finfish. Alaska has a long-standing ban on finfish aquaculture that was enacted in 1989. Finfish, green crabs, clams and prawns are the most commercially exploited fishes of the lagoon. The US government has approved BRDs that reduce finfish bycatch by 30%. The bay serves as a nursery for finfish, shrimp and crabs. FishBase is a global species database of fish species (specifically finfish).