Railroad Valley springfish
People have seen the Railroad Valley springfish in six places where the water comes out of the ground hot.  The fish came there as Railroad Lake dried up.  Currently, they still live in Big, North, Hay Corral, and Reynolds Springs, but they have disappeared from the other places.   People have also brought them to live in ponds in other places, for example Sadaville, Creek Canyon, and Chimney Spring.  Scientists have not checked if it has a bad effect on the places people brought it.