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. Gila ditaenia is endemic to the Rio de la Concepcion drainage in Arizona and Mexico. In Arizona it is restricted to California Gulch, Atascosa Canyon, and Sycamore and Penasco creeks. Introduction of nonnative fish such as the green sunfish are causing reasons for concern.