File:FMIB 49397 World's Record Tuna.jpeg

English: Holder, Charles Frederick (1913) Game Fishes of the World, London: Hodder and Stoughton

English: Original inscription: Word's record. Tuna weighing 680 lbs. captured with rod & line by J.K.L. Ross at St. Ann Bay, N.S. - Depicted people: Jonathan Kenneth Leveson Ross alias J.K.L. "Jack" Ross (1876-1951) born in Lindsay, Ontario, named Commander of the Order of the British Empire and thereafter was referred to as Commander Ross. In 1911, Ross caught a 680-pound tuna, setting a world record for the largest caucht with a rod and reel, while fishing off Cape Breton Island in Nova Scotia (Richard Sowers: The Kentucky Derby, Preakness and Belmont Stakes, McFarland, 2014, p. 80ff [1]). Shown with the boatman next to the tuna hanging from a rack.
Mr. J. K. L. Ross, who passes his summers at St. Ann's Bay, is the pioneer of the tuna fishing there. (...) He was unsuccessful until recently, when, on the twenty-eighth of August, 1911, he succeeded in landing, after a fight lasting four hours and forty-five minutes, a fish eight feet ten inces long, with a girth of six feet three inches, and weighing 680 pounds on the scales at Sydney twenty-four hours later. (Sport On Land And WATER, Recollections of Frank Gray Criswold, privately printed 1913, p. 117ff [2])