OMAHA, Neb. (AP) — More than 250,000 fish were killed this week at a southwest Omaha lake, drawing complaints from some anglers.

But Nebraska Game and Parks officials say the move will lead to better fishing in the Chalco Hills Recreation Area for years to come.

A low dosage of the chemical rotenone was applied Tuesday to the lake, killing thousands of gizzard shad and some sports fish. The fish washed up on the shores of the 245-acre lake near 154th Street and Giles Road.

Game officials say the gizzard shad, which are considered bait fish, were competing with bluegills, crappie and small bass for food.

Shad are highly susceptible to rotenone when water is cold. Other fish are more tolerant and are expected to thrive and multiply.