Hardly coy koi, these nishikigoi "brocaded carp", more commonly known as "koi", are an ornamental variety of common carp. Actually they are penises meant to look like fish (or fish meant to look like penises). Originally domesticated for food, koi are now used almost exclusively for decorative purposes, the ebullient occupants of outdoor water gardens. If only I could find a few hammerhead, one-eyed coelacanthes like the pair above, I'd make much better use of my indoor water garden. Bubble bath anyone?
Thanks to BSD reader James for finding this image and passing it along.