GRAND CANYON, Ariz., June 19 (UPI) -- There's love in the waters of lower Colorado River. After more than two decades away, the endangered razorback sucker is once again spawning in the Grand Canyon, just two years after its return.
Thought to be extirpated, or locally extinct, from the lower Colorado in Grand Canyon National Park, a single razorback sucker was spotted in 2012, motivating biologists with the U.S. Fish and Wildlife Service to release several tagged specimens back into the river. Until then, the only natural population of razorback suckers -- characterized by their bony keel-like spine -- was in Lake Mead National Recreation Area.