Paradise fish female and male 02.jpg
[[User:A-kun--a~commonswiki
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Paradise fish female and male 02, Sexual dimorphism, Macropodus opercularis, Assumed own work
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Paradise fish female and male 02, There is a couple of paradise fish (''Macropodus opercularis''). On the left is female, and the right one is male.
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天国魚 雌雄2型、性的二型、オオムネアカゲラ、自著
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天国魚 雌雄2匹、天国魚 雌2匹、天国魚 雄2匹左側が女性、右側が男性。
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dimorphism