When and where do perch spawn?
Among the first fish of the northern spring: right after ice-out, at roughly 7–12 °C (45–54 °F), weeks before bass have even staged. Schools push into shallow bays, flooded vegetation, and river mouths and drape their eggs over submerged weeds, brush, and fallen branches in about 0.5–3 m (2–10 ft) of water, mostly at night and dawn. Timing is pure latitude: late March on the southern edge of the range, April into May across the Great Lakes and southern Canada, into June on the coldest northern waters. Water temperature calls it, not the calendar.
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