What kind of wildlife lives in the Colorado River?

Funny enough, i can not find anything telling me about wildlife in the Colorado RiverWhat kind of wildlife lives in the Colorado River?
http://www.fws.gov/coloradoriverrecovery鈥?/a>


http://travel.mongabay.com/grand_canyon/鈥?/a>


http://www.ci.austin.tx.us/preserves/col鈥?/a>

lips