Alewife (fish)

Species of shad

The alewife or river herring (Alosa pseudoharengus; pl.: alewives) is a species of herring found in North America. It is commonly anadromous but there are also significant landlocked populations. It is one of the smaller species of shad, of the subgenus Pomolobus.

Nº Q659283 ★★

Uncommon · Nature

Alewife (fish)

Species of shad

The alewife or river herring (Alosa pseudoharengus; pl.: alewives) is a species of herring found in North America. It is commonly anadromous but there are also significant landlocked populations. It is one of the smaller species of shad, of the subgenus Pomolobus.

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From Wikipedia

The alewife or river herring (Alosa pseudoharengus; pl.: alewives) is a species of herring found in North America. It is commonly anadromous but there are also significant landlocked populations. It is one of the smaller species of shad, of the subgenus Pomolobus. As an adult it is a marine species found in the northern West Atlantic Ocean, moving into estuaries before swimming upstream to breed in freshwater habitats, but some populations live entirely in fresh water. It is known for its colonization of the Great Lakes via the Welland Canal, bypassing Niagara Falls. There, its population peaked between the 1950s and 1980s to the detriment of many native species of fish. In an effort to control it biologically, Pacific salmon were introduced, only partially successfully. As a marine fish, the alewife is a US National Marine Fisheries Service "Species of Concern".

Text: Wikipédia, CC BY-SA 4.0. · Image: Wikimedia Commons (CC BY-SA 3.0) ·

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