Tough one. You might try more auto supply stores instead of searching for "vampire fish" or something like that. Possibly a novelty store like Archie McPhee would have it. For instance at
http://members.lycos.co.uk/bouncechr...walk/cool1.jpg they have the Gefilte Fish. They call it the Gefilte Fish Plaque. Goooodluck... I didnt see it at Archie's, tho.