 Arizona placed the Yaqui sucker on the Endangered species list in 1988, and little has been done to recover their numbers.Aquifer pumping, reduction in stream flows, and predation from non-native green sunfish, are all major contributing factors to the decline of the species according to Nature Serve (2002).The San Bernardino Ranch has current plans to reintroduce individuals in attempt to recharge the population, and other projects involve federal habitat preservation.