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During copulation only one is used, which is filled with water thanks to a structure called siphon to expel it under pressure mixed with the sperm. Male shark left and female shark right. Usually hermaphrodites are sequential , meaning they can switch sex , usually from female to male protogyny.

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Apreneu com es processen les dades dels comentaris. The Amazon molly , pictured , reproduces by gynogenesis. In the green swordtails, which only have courter males, females preferred the males with smaller junk. Animals have different breeding strategies.

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fish have a penis Do