Status of the razorback sucker, Xyrauchen texanus (Abbott), in the lower Colorado River basin.

Abstract

The razorback sucker population of the lower Colorado River basin is now reduced to scattered individuals in all but Lake Mohave, Arizona-Nevada. That population consists of large, slowly-growing fish, which are proposed to be nearly 30 yr old. The species is now under artificial propagation, and is being reintroduced within its native range. Predation by introduced fishes on early life-history stages of razorback sucker is considered the most important factor in their decline. -from Sport Fishery Abstracts