Fish Town: Shad don’t jump, but with a little help, their numbers can

story by Bernard Brown | photos by Christian Hunold. Joe Perillo, a biologist with the Philadelphia Water Department, talks about the fishway and points to the fish crowder - a metal apparatus that forces the shad closer to the window so the Water Department can take a better photoWhen we think of migrating fish swimming upstream to spawn, we picture salmon heroically leaping up waterfalls — the stuff of inspirational posters. But the American shad is different. “Shad don’t jump,” Joe Perillo, a Philadelphia Water Department (PWD) biologist, plainly states. American shad stay in the water, and for millennia they swam gracefully up the Schuylkill River as far as Pottsville.
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