Rowan Crothers posted a Tokyo 2020 qualifying time in the men's 50m freestyle ©Getty Images

Australia added more medals to their tally on day two of the first World Para Swimming Series as the hosts were ever-present on the podium in Melbourne.

Freestyle swimmer Rowan Crothers took the men's 50 metres freestyle win in 23.86sec for 915 points at Melbourne Sports and Aquatic Centre, making the qualifying time for the Tokyo Paralympics in the process. 

Crothers also won the 100m yesterday, narrowly missing the world record for his classification.

“I’m really happy with the two swims from this week in the 50m and 100m,” said Crothers.

“I’m not too sure how that 50m went and I won’t know until I speak to my coach and he tells me, because really the times aren’t as important here as the process and that’s what I’m really working on.

"It's about making sure I really execute my race plans properly and develop on them in the lead up to Tokyo."

He was joined on the podium by New Zealand's Cameron Leslie, who finished five points behind with Crothers' fellow native Oscar Stubbs finishing third.

Rachael Watson would win the women's equivalent after winning in a time of 39.75 for 865 points, also making the qualifying time for Tokyo.

Katja Dedekind would be a fair distance behind with 836 points for silver and Katherine Downie ensured it was an all-Australian podium in third.

New Zealand's Nikita Howarth was the only non-Australian to win on day two ©Getty Images
New Zealand's Nikita Howarth was the only non-Australian to win on day two ©Getty Images

However, Dedekind would take gold in another event - the 100m backstroke - with the 18-year-old winning in a time of 1:08.71 for 877 points ahead of Australian Paralympian Ellie Cole and the United States' Elizabeth Smith. 

Jake Michel won his second gold medal in the men's 100m breaststroke after winning the 50m the previous night.

With a time of 1:08.38 for 857 points, he was comfortably ahead of the United States' Evan Austin and fellow Dolphin Matthew Levy who rounded off the podium.

Nikita Howarth of New Zealand topped the podium in the women's 100m breaststroke in 1:33.81, with Australia's Tiffany Thomas Kane taking her second silver of the competition ahead of compatriot Paige Leonhardt who won bronze.

Finally, Timothy Hodge made it two for two with another gold medal in one of the more dominant performances of the day, winning the men's 100m backstroke in a time of 1:03.74, winning by 84 points ahead of New Zealand's Jesse Reynolds and another Australian, Ricky Betar.