Also mosquito larvae. Once found throughout entire length of Owens river to Lone Pine. Now found in only a few protected locations in Fish Slough. Once thought to be extinct. Now listed as Endangered by Federal and State governments.
Population is listed as stable.
Now, there are many more fish species found in the Owens river. None of them are the Owens pupfish. Its range was from the headwaters, near Mammoth Lakes, all the way to Lone Pine, a stretch of nearly one hundred miles of river. It is an aggressive and extremely territorial fish which has the extraordinary ability to survive in water temperatures ranging from 50 to over 100 degrees. This adaptability allowed it to thrive as the most populous fish in the Owens river.