Numerous research projects have been conducted on humpback whitefish throughout Alaska. The Alaska Department of Fish and Game, U.S. Fish and Wildlife Service, and University of Alaska have all studied humpback whitefish in recent years. ADF&G projects include abundance, size composition, fecundity, and stock assessment of Chatanika River whitefish. U.S. Fish and Wildlife Service projects have sought to identify spawning habitats and spawning migration patterns in some reaches of the Yukon and Kuskokwim River drainages. Many of these projects use radio telemetry (biologists place radio transmitter tags into fish and then follow the signal in order to track the fishâ€˜s movements). University of Alaska projects focused on population dynamics, movement patterns, and spawning habitat use.