Why do pike spawn in flooded marshes at ice-out?
The marsh is a solar-heated nursery with a head start: shallow, dark-bottomed, vegetation-filled bays and flooded wetlands warm weeks before the main lake, and last year's drowned grass provides the substrate the adhesive eggs must stick to, holding them up off suffocating silt. Hatching there puts fry into a zooplankton bloom with cover from predators, timed so young pike are already gape-ready hunters when other species' fry appear. The whole strategy is a bet on early warmth and spring water levels — which is exactly what makes it productive in good years and fragile in bad ones.
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