How can fish switch their sex throughout their life?



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    Sex determination is usually a fixed characteristic in terms of life history. Interestingly, there are a few organisms for whome sex is a plastic condition, often determined by a combination of internal and external sign. One such group or organisms which follows this trend are the tropical teleostsL the conspicuous coloful fish inhabiting coral reefs. Reef fish change sex at some point throughout their life. In fact, reef fish that remain as the same sex for their life span are in the minority. 

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