The pair were level at one race all after Fisher won the national K1 500m title on Saturday, but Carrington won race two on Sunday, with a spot at the world champs in Canada coming down to today's decider.\
In breezy and choppy conditions on Lake Karapiro, Carrington got off to a flying start and led by around a boat length at the midway point of the race.
While Fisher closed the gap over the second half of the race Carrington held on to win by half a boat length and secure a spot at the world champs in August.
Fisher, was gracious in defeat, saying it was a privilege to be part of a contest that was so intense.
"I can't even describe how I felt before the race.... all the nerves, the sleepless nights (but) she's brought out the best in me. I think we bring out the best in each other and it was a pretty epic battle.
"That series would be some of the best racing of the decade."