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Distribution and habitat: Originally a fish of the large lakes of SE Finland, vendace have been transplanted for purposes of commercial exploitation throughout Finland with the exception of northernmost Lapland, although populations have been established in lake Inarinjärvi and the river Paatsjoki. Does not tolerate brackish water well and in the sea is restricted to the eastern Gulf of Finland and the northernmost Gulf of Botnia. Vendace move in shoals in open water, preferring deep, clear water. Can tolerate more eutrophic waters provided oxygen levels are good.
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