Bluegills are the most abundant species in Gleason Lake. Nearly 36% of the bluegills measured were over 7 inches. The largest measuring 7.9 inches. Pumpkinseed sunfish were relatively abundant for this type of lake, but the average length was only 4.7 inches. Green and hybrid sunfish were also sampled but in very low numbers.Both black and white crappies were captured during this survey. Black crappies were moderately abundant but were small. The average length of gillnet and trapnet black crappies was 5.2 inches and 5.4 inches respectively. Only 4.8% of the black crappies measured in both gear types exceeded 8 inches. One white crappie measuring 11.5 inches and weighing 0.66 pounds was sampled.Largemouth bass, while not targeted, were also sampled. The average size was 14.3 inches and 1.6 pounds. Two walleyes were also captured. The number of walleyes present in the lake is below average for this type of lake. These fish were a result of the 1987 stocking done by the lake association.Northern pike were found to be abundant. The average size sampled was 23.3 inches and 2.8 pounds. Over 20% of the northern pike measured were over 25 inches. Carp were found for the first time by DNR fisheries crews in 1996. The number per gillnet set fell in the range considered average for this type of lake. Black bullheads were also found in normal abundance. Only one yellow bullhead was sampled during the survey.Three forage species, yellow perch, white suckers, and golden shiners were sampled in low abundance.