29 June 2010 16:30 GMT
A breed of fish in Mexico grows a moustache to attract females.
Mexican mollies have been studied by a group of scientists and after experimenting on the habits of 100 fish, it was found that females of the species were more sexually attracted to males with the structure on their upper lips.
Writing in journal 'Behavioral Ecology and Sociobiology', the experts stated: "The moustache-like structure seems to be a previously unrecognised sexually selected trait in poeciliid fishes."
The scientists are now further exploring the possibility that the moustaches may also have a tactile function.
Professor Schlupp told the BBC: "This is based on the general observation that males will touch the female's genital region with their mouth prior to mating."
http://entertainment.stv.tv/showbiz/184834-moushached-fish/
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