Keith Williams and Stuart Gillham hold the giant Siamese carp. (Stuart Gillham/BNPS) The monster fish, which weighs 134 pounds and 7 ounces, reportedly took 25 minutes to reel in. According to The London Times, the previous record was held by Terry Mather, who caught a 114-pound Siamese carp. The International Game Fish Association will need to confirm the new world record for largest carp. Not bad for a 56th birthday present.