Loading
And two para-swimmers – Lakeisha Patterson (S9 100m freestyle) and Jesse Aungles (SM8 200m individual medley) – won gold on a night when Australian swimmers also secured four silver and four bronze medals.
The Dolphins now have 45 medals at the Gold Coast Games: 16 gold, 15 silver and 14 bronze.
Campbell's butterfly triumph is arguably the most momentous – her third gold of the Games came in an event she didn't race for a decade, and entered for fun.
Campbell swam the butterfly as a teen but gave up when, troubled by neck and shoulder injuries, she opted to focus on freestyle.
But after taking a year off following the 2016 Olympics, Campbell returned to the butterfly in a bid to inject enjoyment and variation into her comeback.
"I am actually really stoked with that one," Campbell said.
"I kind of picked up the 50 'fly as a bit of joke towards the end of last year. I qualified for Comm Games and it suddenly didn't become such a joke."
Campbell's triumph came in an Australian medal trifecta – Holly Barratt took silver and Madeline Groves bronze.
Larkin's backstroke success also came in an Australian medal sweep with teammates Ben Treffers (silver) and Zac Incerti (bronze).
Chalmers, meanwhile, had mixed Sunday – his 100m silver was followed by relay gold with teammates Alex Graham, Elijah Winnington and Mack Horton.
Chalmers was suffering a sore back and head cold but refused to use the ailments as an excuse for his shock 100m loss.
"No one swims to come second, you always want to stand at the top of the podium," Chalmers said.
"It has definitely got the fire in my belly."
AAP
Comments disabled
Morning & Afternoon Newsletter
Delivered Mon–Fri.
