PIKETON, Ohio -- All of the fingerling bluegill swimming in the gray tank with a scarlet 36 on it look about the same. But a quarter of them are "super males." They're the key to growing ponds full of ...

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COLUMBUS, Ohio, April 26 (UPI) -- A researcher at Ohio State University says he is working on producing larger bluegill by breeding super males with two Y chromosomes. The male bluegill are about ...