Many accounts are incomplete although new information is being added continuously.
Errors do occur.
Users are cautioned to refer back to the original cited source to assess completeness and correctness before using the information. Web updates are intermittent, not continuous, therefore some dynamic information such as legal status may not be absolutely current. A Federal Recovery Plan was approved for this species. Humpback chub are endangered under the ESA and are endemic to the Colorado River Basin. Humpback chub have been severely reduced in numbers.