Australia's Alessandra Colombini claimed a second open water gold medal on the final day of the Oceania Swimming Championships s New Zealand's Matthew Scott took the corresponding men's title in Suva.
Colombini won the women's 10 kilometres event at the Upraising Beach Resort in Fiji last week before taking a pool silver in the 800 metres freestyle.
She followed that with a 5km triumph over team-mate Bianca Crisp.
New Zealand's Jacey Cropp took the bronze medal.
There were better fortunes for New Zealand in the men's 5km event as Matthew Scott finished ahead of Australia's Lachlan Colquhoun.
Colquhoun took a second open water silver medal after a similar performance in last week's 5km event.
Wesley Roberts of the Cook Islands took bronze.
It meant New Zealand finished top of the overall medals table with 24 gold, putting them seven clear of second-placed Australia.