There are also smaller numbers of chum and sockeye salmon. Successful spawning of interior Coho, Kokanee and Sockeye Salmon was accomplished. Kokanee is also a name for landlocked Sockeye salmon. Idaho's Snake river once teemed with sockeye salmon. Nanika River feeds Morice Lake and produces sockeye salmon. Sockeye salmon do not feed during reproduction. The Kvichak River is the world's most productive watershed for sockeye salmon. Sockeye salmon fisheries are present at the lake. Shoepeg corn is also the best variety of corn for Sockeye salmon bait. There are many reasons why Sockeye Salmon in the Snake River are reduced in number. In this study two populations of sockeye salmon were observed (Egegik and Ugashik). Sockeye salmon are semelparous, dying after they spawn. Sometimes sockeye salmon males behave aggressively towards subordinate males. Salmon, particularly sockeye salmon, play a major role in the ecosystem and the local economy. Commercial fisheries include the world's largest sockeye salmon fishery.