Friday, September 28, 2012

New fish "hooks up" with mates

A newly discovered freshwater fish seemingly doesn't know how to take "no" for an answer.  It's equipped with - really - four barbed hooks on its genitals.  Gambusia quadruncus, the llanos mosquitofish, diverged from its closest relative about a million years ago, and it's been off by itself evolving its mating equipment. 

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