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green river time
This is how the alewives spawn
Landlocked alewives move from deep water to shallow beaches in lakes or move up streams to ponds to spawn in spring.
Females usually move to the spawning areas just before the males. Spawning takes place at night in groups of two or three over a sandy or gravelly bottom. Freshwater females deposit 10,000-12,000 eggs, whereas their sea-run counterparts produce 60,000-100,000 eggs. Eggs are broadcast randomly, are demersal (that is, they sink), and are not particularly adhesive. Adults leave the spawning area after spawning; no care is given eggs or young by the adult fish. In less than a week, the young alewives hatch to begin feeding on minute, free-floating plants and animals. By fall, the young alewives make their way back to the sea or, in the case of landlocked populations, to the deep waters of lakes. Landlocked alewives reach an average length of about 6 inches when adults, by contrast with marine alewives that reach much larger sizes.
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