The scale method of growth analysis is applicable to the pike-perch of Lake of the Woods, but the body-scale relationship is that of a third-degree polynomial rather than a straight line. Length calculations were made using the corrected body-scale relationship. Female pike-perch grow more rapidly than the males, but the differences in growth rate are small. Lee's phenomenon is pronounced and is apparently due to the selective removal of the faster growing fishes by the commercial fisheries. The growth rate is more rapid during years with high mean summer temperatures, July temperatures being most significant. The weight increases approximately as the standard length raised to the 3.1 power. Male pike-perch mature when 4 years old, but females usually do not mature until 5 or 6 years of age.