Endangered fish species in South Dakota face significant habitat challenges, and the Game, Fish and Parks manages their recovery.

High-grading in trout fishing involves releasing a kept fish to replace it with a larger catch, impacting fish health and South Dakota populations.

South Dakota fishing regulations explain whether anglers can keep dead oversize game fish that failed to survive release.

South Dakota Game, Fish and Parks biologists determine fish survey frequency based on water body size, species, and management goals.

Fish population surveys measure ecosystem health and population dynamics to drive data-driven management decisions in South Dakota.

Biologists track walleye growth on Lake Oahe to set fishing limits, monitor forage availability, and maintain population health.

Lake herring are freshwater schooling fish in South Dakota measuring eight to fifteen inches long, with details on their appearance and habitats.

Rainbow smelt populations deliberately stocked in Lake Oahe during the 1970s provide food for Chinook salmon and walleye.

South Dakota walleye feeding habits and forage fish species explain seasonal locations and lure selection across Lake Oahe.

Belle Fourche Reservoir walleye regulations and unique biological challenges explain stunted fish growth and distinct management strategies.