Fish Go Mad for Ginger Gene (image) BioMed Central Caption There may be plenty of fish in the sea but the medaka knows what it likes. A new study published in the open-access journal BMC Biology shows how a single gene mutation that turns Japanese Killifish a drab gray color renders them significantly less attractive to more colorful members of the opposite sex. Credit Shoji Fukamachi et al BMC Biology 2009 Usage Restrictions Embargoed until 29th September 00:01am (GMT) Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.