Do perch use rock, points and current, or only weeds and mud?
Weeds and soft basins are the core, but perch are grazers that follow food onto hard bottom too. Rock-to-mud transitions and offshore rock hold jumbos hunting crayfish and, in the Great Lakes region, gobies; in fall the jumbo gangs work hard bottom at 8–12 m (26–40 ft). Rocky shorelines, riprap, piers and breakwalls hold smaller fish much of the season, and Great Lakes harbour walls are a classic spring and fall shore fishery. Points and breaklines are highways: schools travel them between flats, and late-ice fish stack on the breaks outside weedy bays in 2–6 m (6–20 ft). What perch do not do is fight current or bury in cover. River fish live in the slack — backwaters, eddies, harbour basins, the quiet pockets below a dam — and matted slop or standing timber means little to a bottom-feeding school fish.
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