Historic records indicate that 31 fish species have been encountered in the lakes, ponds, and brooks of Acadia National Park, although only 28 species can be found today. Fifteen of these species are considered to be native, while the remainder are non-indigenous, often the result of stocking programs. The "missing" species are all non-natives that are no longer stocked. While brook trout, lake trout, landlocked salmon, and smallmouth bass are perennial favorites of anglers visiting the park, many of Acadia's fish are non-game species. The American eel, the banded killifish, and 3 species of sticklebacks are only part of the diversity of freshwater fish varieties found at Acadia.