Abstract
Abstract Various-sized nylon restraining screens were tested to determine the largest opening that still retained 72-h posthatch fry of walleye (Stizostedion vitreum). Screens with more than 710 μm between threads and more than 53% open area allowed more walleye fry to escape than the screens with smaller openings. We recommend using screens with no more than 710 μm (10.31 meshes/cm) between threads and no more than 53% open area to contain young walleye fry when being fed formulated feeds.
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