The genetic mutation that ruins orange-coloured fish sex lives


Researchers from University of Konstanz, Germany and the University of Tokyo have found a genetic mutation that gives medaka fish its grey colour, rendering them less attractive to the colourful members of the opposite sex.

The Japanese Killifish is commonly found in Southeast Asia in wide range of colours like brown, orange and grey.

The research team led by Shoji Fukamachi studied the effects of alterations in a colour-determining gene on mating preferences of the fish.

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