Singapore rule day one in the pool at the ASEAN Swimming Championships.
The host took five of the eight gold medals available on the night.
The opening night of the inaugural Southeast Asian Swimming Championships proved to be a golden one for Vietnamese teenager Nguyen Thi Anh Vien.
The 15-year-old started the evening by winning the women's 200-metre backstroke in 2 minutes 13.84 seconds.
She then added a second gold medal when she won the women's 200-metre individual medley in a time of 2 minutes 17.67 seconds.
With most Olympic qualified swimmers skipping the event, the field was wide open for the teenagers and Singaporean 15-year-old Mylene Ong took advantage, winning the gold in the women's 100-metre freestyle with a time of 56.02 seconds.
That put her under the Olympic invitational selection qualifying time of 56.48.
The Indonesia team picked up their first gold of the swimming competition when Sudartawa I Gede Siman touched out just ahead of fastest qualifier Zheng Wen Quah of Singapore to win the men's 200-metre backstroke in 2 minutes 03.07 seconds.
But Quah, who is yet another 15-year-old in the field, did pick up gold in the men's 400m individual medley with a winning time of 4:27.62.
It was another gold for hosts Singapore in the men's 50 metre breaststroke as Lionel Khoo proved the quickest in 28.75 seconds.
Singapore also raced to victories in both relays to finish out the night.
The men winning the 4x200 metre freestyle relay in 7 minutes 30.79.
In the women's 4x200 freestyle relay, Singapore again cruised to victory in 8 minutes 21.67.
In the end the hosts picked up five of the eight gold medals up for grabs on the night.
Day 1 highlights from the ASEAN Swimming ChampionshipsThursday, June 14 2012