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Mortality, length and weight changes of bluegill fish (Lepomis macrochirus) were investigated at pH levels of 5.5, 6.5 and 7.5. A sulfurici/nitric (7:3) solution was used to simulate the effects of acid rain on bluegills. Fish at pH 5.5 had a significantly higher mortality and smaller length and weight changes than those of 6.5 and 7.5. No significant difference in length and weight was observed in fish raised at pH 6.5 and 7.5. These results indicate that bluegill in waters of pH 5.5 have a reduced chance to survive and will not grow as well as those at pH 6.5 and 7.5. [ABSTRACT FROM AUTHOR]