There was great variability in the range of survival of stocked esocids in Wisconsin waters. Generally, muskellunge and northern pike survived in the rage of zero to 60% over short term intervals. Despite high variations, the stocked fingerlings added to the lake populations. There was an overall tendency for hybrids of these two species to survive at higher values , up to 85%. Dry diet-fed hybrids, however, tended toward lower survival than minnow-fed hybrids.