Effects of Environmental Enrichment On the Survival and Movement Patterns of Hatchery-Reared Steelhead
Performance was evaluated by comparing survival and movement rates, route selections, residency, and movement patterns to quantify potential behavioral differences. To date we have detected 11 fish exiting the upper Mokelumne River, 82% of which were reared under traditional hatchery conditions. Additionally, we have detected a higher number of fished reared in traditional raceways as compared to enriched conditions. Differences in the behavior of these fish provide valuable information that could be used to guide future management and conservation strategies concerning hatcheries.