Not 1, but 2 kinds of males found in the invasive round goby

Scientists have found the existence of two types of males of a fiercely invasive fish spreading through the Great Lakes, which may provide answers as to how they rapidly reproduce.

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<p><a href="http://www.physorg.com/news164282737.html">Not 1, but 2 kinds of males found in the invasive round goby</a></p> <p>Scientists have found the existence of two types of males of a fiercely invasive fish spreading through the Great Lakes, which may provide answers as to how they rapidly reproduce.</p>