The kokanee salmon have returned to some of the ... so that is some of what we are doing," said Birney. Unlike the larger sockeye salmon, the "little red fish" don't migrate to the ocean.

Kokanee, which are landlocked sockeye salmon, were introduced to Lake Coeur d'Alene in 1937. They take four years to reach sexual maturity and spawn. Biologists try to predict the number of ...