The Service also proposed designating 1,944 river miles as critical habitat for the mussels. The Texas pimpleback, Guadalupe orb, Texas fatmucket, Guadalupe fatmucket and false spike will be listed as ...

The Service also designated 1,577.5 miles of rivers and creeks in the Brazos, Colorado and Guadalupe river basins as critical habitat for the mussels. The Endangered Species Act prohibits federal ...