In 2012 and again in 2013, razorback sucker have been detected in the lower Grand Canyon. These were the first recorded sightings in the Grand Canyon National Park since the 1990s. In March 2014, in an effort to find out more about this wild population, nine tagged adult razorback sucker were released into the River Colorado below the Lava Falls. By tracking these fish, biologists hope to be able to detect the whereabouts of other spawning fish and assess their movements and how they use the habitat.
