Caption: Fish
explanation: Fish and seafood is an inevitable part of Japanese life. That's why fish and sea creatures emoticons are quite popular too. You can use <<  or 彡 for a tail, and )) for the gills.
(°)#))<<
<・ )))><<
ζ°)))彡
>°))))彡
(°))<<
>^)))<～～
≧( ° ° )≦