For these reasons, Japan's Zen Nippon Airinkai ZNA (an organization that sanctions Japanese nishikigoi hobbyist competitions) have disallowed butterfly koi from competitive judging for many years; the UK Koi Judges Association also excludes these fish from competition although their American counterpart the Associated Koi Clubs of America (AKCA) has (as of June 2006) reportedly created new standards for judging butterfly koi at future AKCA competitions. American shows that permit longfin or butterfly koi usually enter them as a variety. These entrants rarely win higher awards, however some shows feature "Best Longfin" under and over 18 inches.