Canadian Benoit Huot completed his set of medals by winning a silver medal in the men's 400 metre freestyle at the London 2012 Paralympic Games. Huot had already won both a gold and bronze medal earlier this week.
Huot reached the wall in a time of four minutes, 6.58 seconds.
American Ian Jaryd Silverman won the race in a time of 4:04.91, while Briton Robert Welbourn won the bronze medal in 4:08.18.
Huot has won a medal in every event he has entered. His final event is the men's 100m freestyle, held Thursday.
Canadian Issac Bouckley finished eighth in 4:18.53.
In the women's 400m freestyle, Canadian Aurelie Rivard won a silver medal, her first of the Games. The 16-year-old finished in a time of 4:36.46, just under two seconds back of the winner, Elodie Lorandi of France.
The bronze medal went to Susan Beth Scott of the United States.
Rivard will race her final Paralympic event Thursday, the women's 100m freestyle.