Under a mostly clear night sky at the 10,000-seat open-air Gold Coast Aquatic Centre, Ruck held off a fast-charging Ariarne Titmus of Australia in the 200-meter freestyle.
So far, Australia is leading the overall medals tally with 15 medals, but it is one behind England on gold medals with five against six.
Kelland O'Brien replaced Jordan Kerby in the quartet that qualified fastest earlier in the day, teaming with Leigh Howard, Alex Porter and Sam Welsford to win Australia's second of three track cycling gold medals at Brisbane's Anna Meares Velodrome.
Bates, according to news.com.au, said: 'I have to say a bit disrespectful to sit up at the end like that.
There was some controversy in the morning qualifying when world champion Ben Proud was disqualified from the 50-meter butterfly at the Commonwealth Games on Thursday and lost an appeal against the decision. I probably feel more emotion here than in Rio (2016 Olympic Games) because the whole crowd is cheering for you.
Martin Barras said he was disappointed about the NZ men's pursuit team being disqualified from their bronze medal race in Brisbane.
Schoenmaker, swimming at her first Commonwealth Games, controlled virtually the entire women's 200m breaststroke to pull away from England's Molly Renshaw and Chloe Tutton of Wales.
Australia has claimed the men's team pursuit bragging rights from archrivals England with a world record ride to triumph at the Commonwealth Games.
"It was a huge honour to stand on the podium and be New Zealand's first medal of the games".
"I've raced against Hannah in every meet and I've been second every time".
Australia lead the medal table in the pool on 32, with 11 golds.