Butler, Pa. — Anglers can blame gizzard shad for an overabundance of skinny crappies and bluegills on Lake Wilhelm in Mercer County. Shad are wreaking havoc on Wilhelm’s panfish by outcompeting them for forage, while providing larger predators, such as walleyes, muskies and largemouth bass, with alternative meals, according to Tim Wilson, a biologist with […]
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