Brown Trout

Salmo trutta
Family: 
Salmonidae (trouts) in the order Salmoniformes (salmon, trout, chars and others)
Description: 

A sleek, streamlined fish with soft-rayed fins and small scales. Body and dorsal fin with round, black spots, body with small red or orange spots surrounded by a lighter halo. Tail fin is usually not forked and usually without spots. Anal fin usually with 9 rays.

Size: 
Total length: 8 to 15 inches; maximum about 37 inches and 26 pounds.
Habitat and conservation: 
Stocked, from hatchery-reared fish, into cold streams and lakes with water temperatures that generally remain less than 70 degrees F. In streams, most often found around dense cover, such as submerged logs or undercut banks or in deep water below riffles.
Foods: 
Carnivorous, feeding on aquatic and terrestrial insects, crayfish, crustaceans, snails and small fish. Large adults feed primarily on fish and crayfish.
Distribution in Missouri: 
Found in about 60 miles of spring-fed, mainly Ozark streams and in Lake Taneycomo.
Status: 
A native of Europe and the British Isles, this game fish was introduced into our country as early as 1883. More than 200,000 brown trout were introduced to Missouri from 1927 to 1933. Stocking efforts resumed in the 1960s, concentrating on the Current and North Fork rivers, and expanding to other cold Ozark streams and Lake Taneycomo. Populations in our state are not self-sustaining and are maintained by periodic stocking.
Life cycle: 
All brown trout populations in Missouri are maintained through releases of hatchery-reared fish. Their lifespan is usually about 4 years, but they are capable of surviving for 8 or more years.
Human connections: 
The Department estimates that trout angling-related activities contribute $382,000,000 to Missouri's economy annually.
Ecosystem connections: 
Controls aquatic prey populations; can have an adverse effect on native species.
Shortened URL
http://mdc.mo.gov/node/4282