The Guadalupe Bass is considered a rare species, and until recently was classified as vulnerable. We highly recommend practising a catch and release program with this species until sufficient numbers have removed their status from rare.
One of the reasons for its rarity is its limited distribution. The Guadalupe Bass has a very limited distribution, being limited to the Edwards Plateau in Colorado and Texas.
More specifically, they can be found in the San Antonio, Guadalupe, Colorado, Lampasas, Leon and Brazos rivers. It prefers gravel beds, runs and flowing pools and creeks. The Guadalupe Bass can also be found in small and mid-sized rivers and they can tolerate a large temperature fluctuations in these rivers from a low of 39 degrees in the winter to 95 degrees in the summer.
Read more here: http://bassfishing-gurus.com/guadalupe-bass-distribution.php