Abstract
AbstractIntensive larviculture of walleye Sander vitreus and other fishes require fine screens over the standpipe to retain the small fish. The high feeding rate of small (<710‐μm) microparticulate feed requires that screens be removed for daily cleaning with pressurized water to remove waste feed, oil, and biofilm. Standard screens have an open bottom that can trap fry in the space between the standpipe and the screen when the screen is replaced. Here we describe a modification of a standpipe screen that prevents the fry from entrapment in the space between screen and standpipe.Received April 23, 2010; accepted June 22, 2010
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