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1:1 animal_genitalia animal_penis anthozoan anus aquatic blue_eyes blue_hair blush bodily_fluids bubble butt butterflyfish censor_bar censored cetacean_genitalia cetacean_penis clothed clothing clownfish cnidarian coral detailed_background duo erection fin fish genital_fluids genitals hair ineffective_censorship male male/male mentaiko merfolk multicolored_hair muscular navel nipples nude one_eye_closed open_mouth penis piercing pomacentrid precum sea seabed sex shark_tooth split_form swimming syngnathiform tail tail_fin tapering_penis tattoo topless trumpetfish underwater underwater_sex water