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The Awesome Waters of Great Smoky Mountains National Park
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.
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
There are four federally protected fish species in the park, all of which live in lower Abrams Creek: the spotfin chub (Threatened), duskytail darter (Endangered), smoky madtom (Endangered), and yellowfin madtom (Threatened). Efforts are underway to reintroduce these fish back into Abrams Creek and some signs of success have been noted.
Fisheries staff have been monitoring fish populations in both high elevation (>3,000 feet) brook trout streams and low elevation (<2,500 feet) large stream systems through the park since 1986. Long term monitoring surveys indicate that fishermen play little to no role in the population dynamics observed in park streams. Major spring floods and summer droughts are the driving forces behind fish population fluctuations seen both in the park and outside the park.
Although most streams in the park are very clear, cold and pollution free, they are not very productive in terms of growing big trout. Most trout in the park grow relatively fast, live only about 4 years, and die due to a lack of food resources. The diversity of aquatic insects in park streams is quite high, but the density of each species is fairly low making food resources for trout scarce. In fact, only 4% of brook trout and 30% of rainbow trout reach 7 inches. Less than 1% of brook trout and 17% of rainbow trout reach 8 inches. Only brown trout, who switch to a piscivorous (fish) diet at around 8 inches, have the ability to live beyond 4-5 years and reach sizes of nearly 30 inches!
For more information, search the Internet for "fish Great Smoky Mountains National Park".