Male zebrafish sex tool stops fin regeneration

By Ashley Yeager, 08:47 AM October 14, 2013

Tiny, spiked structures on the pectoral fins of male zebrafish help them have sex. However, the structures seem to hinder the fish’s ability to regenerate their fins.

The structures, called tubercles, help males grasp females when mating, and they make a protein that prevents fin regeneration, scientists report October 14 in Developmental Cell.

The authors argue that males with more sexual ornaments, and consequently better chances of successful breeding but not fin regeneration, contribute to ...

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