D'you know that some types of fish are hermaphrodites? And that there are two types of hermaphroditism - one where the individual has both male and female organs; and the other where the individual changes back and forth from one to the other gender (with appropriate changes of genitalia). And there are fish of both types. Makes Mr SixpackBack's question a bit tricky I think. Oh, and even male fish don't have penises
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