Stomach analysis of landlocked Atlantic salmon and brook trout from Echo Lake, Maine, indicated that salmon relied more on open water prey (landlocked alewives, rainbow smelt and terrestrial insects) than did brook trout, which fed more on bottom and shoreline prey (sticklebacks, killifish and aquatic invertebrates). Most fish were eaten by salmon and trout in summer and few were eaten in winter. Young-of-the-year alewives constituted an important portion of the salmon diet, especially in late summer, but were not significant forage for trout. The isopod Asellus racovitzai racovitzai was important forage for trout in winter and spring. A review of studies concerning food habits of salmon and trout indicates utilization of pelagic forage fish is related to lake area.