White perch apparently got into the Allegheny some years ago from Chautauqua Lake through Conewango Creek. I first cought them at Lock 9 maybe 10 years ago, and remembered that I had caught them before in Chautauqua. I talked to the fish commission biologist at the time. He said it was news to him, but he talked to his counterparts in New York and confirmed that Chautauqua was full of white perch. I don't think NY knows how they got there. I still catch a few in the upper Allegheny. I think most folks just figure they're little white bass.
If the picture works, it shows some fish from Lock 9 last year. I think the top one is a white bass and the other 2 are perch. Note that the ruler is 18" not 12".
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