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Best known example of sex change The wrasse - or Cleaner fish as it is known because of its habit of eating parasites from the skin, gills, and mouths of other fishes - is a brightly coloured fish living on Indo-Pacific coral reefs. In the words of the zoologist, R. Robertson (in "Sex Changes under the Waves") - "The ultimate ambition of female Cleaner fish is to become male." A male generally dominates a group of females: if however he abandons his harem the most dominant of the remaining females begin to change sex within a few hours. The tendency in females towards sex change can be accounted for on the basis of an inspection of their gonads - the females are actually hermaphrodites as they all have small amounts of active (but walled-off) testicular material scattered through their ovaries. This peculiar situation among the wrasse is said to afford a number of ecological advantages. From The Illustrated Book of Sexual Records. © 1974, 1982, 1997-2001 G.L. Simons Back to Home Page Other Categories   Human Physiology     Sexual Techniques and Peformance   The Arts Abberant Sex and Deviations Animals and plants Contraception and Castration Sexology Prudery, Superstition and the Law Looking for a "hot" date? Something naughtier? ABC Fantasy Dating Hot videos, DVDs? All tastes, and streaming video! Try Adult Videos & DVDs World Sex News On nudity, pornography Erotica, Orgasms, Lesbians Click here See Also World Sex News Erotic Awards Sex Maniacs Ball Sexual Freedom Coalition Encyclopedia of Unusual Sex Practices Catastrophism!

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