The streams and pools of the Swisshelm, Chiricahua, Mule, Pedregosa, Perilla and Peloncillo mountains are part of the Rio Yaqui Drainage. Those water courses drain toward Sonora and the Rio Yaqui and they have or used to have the same eight species of fish that are found in that river. The Mexican stoneroller is one of those eight species and I owe that fish big time for helping cure the blues. So yay, for cool native fish found in the borderlands of southeastern Arizona! The photos are mine.