Summary ¹

The alewife (Alosa pseudoharengus) is an anadromous species of herring found in North America. It is one of the "typical" North American shads, attributed to the subgenus Pomolobus of the genus Alosa. As an adult it is a marine species found in the northern West Atlantic Ocean, moving into estuaries before swimming upstream to breed in fresh water habitats, but some populations live entirely in fresh water. It is best known for its invasion of the...

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1. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Alosa_pseudoharengus

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