Fig. 2From: Genetic and phenotypic variation along an ecological gradient in lake trout Salvelinus namaycush Illustrations of four lake trout ecomorphs from Isle Royale, Lake Superior. Photographs of lean (a), humper (b), siscowet (c) and redfin (d) are shown. The vertical lines provide a sense for relative sizes and positions of key anatomical features, such as head size and fin insertion and lengths among the ecomorphs. Note that the four fish have been size-scaled to the same focal lengthBack to article page