Rule 34 Dev - abs anthro aquarium balls erection genitals male muscular muscular_anthro muscular_male non-mammal_balls nude penis smile solo teeth underwater vivarium water muetank petruz_(copyright) hammerhead_(petruz) fish marine scalie shark 16:9 3d_(artwork) digital_media_(artwork) hi_res source_filmmaker_(artwork) widescreen|8672572825