CEDAR RAPIDS, Iowa – Anglers eagerly watched March 21, 2024, as the Iowa Department of Natural Resources released 2,000 trout into the lake at Prairie Park Fishery. Eric Bailey, Natural Resources Technician 2 with the DNR, said the majority of the rainbow trout – from the Manchester Fish Hatchery – were about 15 months old and 11 inches long, with a few larger 3-year-old female brood stock and 2-year-old males included, which were no longer needed for breeding.