Although evidence is largely circumstantial, cutthroat trout are likely native to the state. The trout that probably occurred in Texas was the Rio Grande cutthroat trout, O. clarki virginalis (Girard). The current range of this subspecies includes the headwaters of the Rio Grande and Pecos drainages, possibly the headwaters of the Canadian drainage (Behnke, 1979). It is thought to have been originally present in at least Limpia and McKittrick creeks in Texas and possibly elsewhere in the Davis mountains (Garrett and Matlock, 1991).
status in Texas:
Species of Greatest Conservation Need