06:30Matthew SmithWiltshire couple what could be the biggest fish ever caught in North AmericaBBC Radio Wiltshire Duration: 2 hours, 30 minutes Wed 25th Jul 2012, 06:30 on BBC WiltshireMichael and Margaret Snell from Salisbury tell Matthew how they reeled in a twelve feet four inch long white sturgeon fish whilst on a fishing holiday in Canada.GenresEntertainmentBrandMatthew Smith Source: BBC Online