Though interesting, carrying your beloved koi around is not reccommended by K.O.I. 
 
Whether you fancy taking your fish for a walk or like your seafood fresh from water to pan, then a bonkers new invention might be for you. The Katsugyo bag allows wearers to show off their expensive market-bought fish as they carry it home. The hand-held accessory doubles up as a portable fish tank is set to launch in Japan.
 
Take your fish for a walk with bonkers new Japanese invention - the katsugyo bag | PerthNow