pdf version - South Dakota Department of Game, Fish and Parks
pdf version - South Dakota Department of Game, Fish and Parks
pdf version - South Dakota Department of Game, Fish and Parks
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Lake Trout<br />
Salvelinus namaycush<br />
Quick key characteristics: The lake trout is found in cold-water habitats<br />
<strong>and</strong> <strong>of</strong>ten prefers deep water. It has small scales, s<strong>of</strong>t fi ns with short bases,<br />
including an adipose fi n. It has a large, forward-facing mouth, a pointed<br />
snout, <strong>and</strong> its body is taller than wide.<br />
Similar species in <strong>South</strong> <strong>Dakota</strong>: other trout <strong>and</strong> salmon<br />
Identifi cation: The combination <strong>of</strong> (1) a dark gray-green body with abundant<br />
pale spots evenly distributed, (2) a relatively long, pointed tail (caudal) fi n,<br />
(3) lower fi ns sometimes with red or orange coloration <strong>and</strong> white edges, <strong>and</strong><br />
(4) relatively large jaw teeth distinguishes the lake trout from other trout <strong>and</strong><br />
salmon in <strong>South</strong> <strong>Dakota</strong>.<br />
Range: The lake trout is native to most <strong>of</strong> northern North America north <strong>of</strong><br />
the USA-Canada border <strong>and</strong> the Great Lakes. It has been introduced into<br />
Pactola <strong>and</strong> Deerfi eld reservoirs (Pennington County) <strong>and</strong> Lake Oahe.<br />
Items <strong>of</strong> interest:<br />
• The lake trout spawns during fall<br />
• Feeds primarily on other fi sh <strong>and</strong> in some circumstances predation by<br />
lake trout affects other fi sh populations<br />
• Slow growing, but can reach 40 in. <strong>and</strong> 25 lbs., rarely exceeding 15 lbs.<br />
in <strong>South</strong> <strong>Dakota</strong><br />
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