avocado chili cold crab cucumber eat eating edible fish food halibut hungry meal nigiri plate prawn raw rice salmon salt sushi vinegar colors colours cool crab varieties crabs crustaceans display displayed fish market for sale fresh frozen home cooking ice market on ice prawns ready for purchase sea food shapes shopping Sizes smell textures varieties wet appearance cephalopods marine cephalopods selection skin Squid teuthida wet market color colored colour coloured variety