Fisher admitted she was terrified of the 500m, knowing vividly the incredible toll it takes but the support from her Hawke's Bay club bolstered her.
"You just paddle into this darkness and everything hurts - you can nearly taste blood when you're paddling and your muscles have been scorched by lactic acid.
"Coming through the 200m, I heard all these kids and when you've got kids running down the side of the bank cheering your name, you've got to rise. That gave me a lot of courage and I charged home."
Ryan also finished second to Fisher in Friday's K1 200m and the two paddlers are likely to pair up as a K2 combination in Europe this season.
Carrington didn't go home empty handed, collecting four golds in various team boats, alongside retiring Eastern Bay teammate Jaimee Lovett, another member of the Rio K4 boat.
It was a sweet way for Lovett to finish, continuing her record of winning medals at all 12 national championships she's attended.