Abstract
Rapid growth of several species of fishes, including the largemouth and spotted basses (Micropterus salmoides and M. punctulatus) and the black crappie (Pomoxis nigromaculatus), was observed during 3 successive summers, 1949–1951, in a reservoir at Springhill, Louisiana. The basin is filled in April and drained in September or October. Largemouth bass young of the year grew to sizes ranging up to 13.8 inches and up to 24.5 ounces during the retention period. The greatest growth in weight for this species was 3.8 ounces per month during a 6 1/2-month period in 1950. The highest average was 3 ounces per month during a 5 1/2-month period in 1949. The average accretion in weight for the spotted bass was less than half that of the largemouth bass. Black crappie grew up to 9.8 inches and 12 ounces during a 6 1/2-month retention period. Summaries of life-history data are included in a table.
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