Brook trout are native to park waters. Pete Yeomans photo. The brook trout is the only trout species native to the Smokies, although non-native brown and rainbow trout have been introduced into the park and today are found in most large streams below 3,000 feet. Brook trout have lost approximately 75% of their native range in the park since the early 1900s mostly due to logging and the introduction of non-native rainbow trout. The non-native rainbow trout out-compete native brook trout by producing more offspring, growing at faster rates, and occupying stream habitat once occupied by brook trout. Today, brook trout are only found in about 133 miles of park streams. Restoration efforts have restored brook trout back to 14.6 miles of their native range since 1986 and continue today. Learn more about the brook trout restoration efforts happening at Lynn Camp Prong in the park. The Great Smoky Mountains National Park boasts over 2,100 miles of streams and is home to 67 species of fish in 12 different families, including lampreys, darters, shiners, minnows, suckers, bass, and trout. Of these 2,100 miles of streams, only about 800 miles contain fish.