Matilda Smith and Max Giuliani achieved number one rankings nationally in their age group over the long-course season.

Smith, who trains with the Sandy Bay club, is top of the 15 year old girls for 100m breaststroke. Her time comes from the Victorian open championships in February when she swam 1:11.29.

Smith is also ranked second in 50m breaststroke and 200m breaststroke and has five top-25 rankings overall. She was captain of last year's state school games team and was Swimming Tasmania's swimmer of the year, an accolade she shared with fellow breaststroke superstar Morgen Hawkins, of Launceston.

Giuliani's blink-and-you-missed-it 100m freestyle swim, in a breath-taking 50.49 seconds at the Tasmanian long-course championships in Hobart in March, broke a 22-year-old state open record.

It also propelled him to the top of the Australian rankings for 100m freestyle for 16-year-old boys. The Hobart Aquatic member is ranked second in his age group nationally for 200m freestyle and has four top-25 long-course rankings overall.

Other Tasmanians to achieve top-three rankings in the country are: Ethan Jones (HC) who is ranked second for both the 200m freestyle and 200m individual medley; and Noah Kamprad (Hobart Aquatic), who is third in 1500m freestyle.

Launceston Aquatic's Emily Mitchell should also be on the top-three list. Her 50m backstroke time from the Victorian age titles in December was 30.22 seconds, fast enough to put her third in Australia in her age group for this event. However, her time was only added to the national database at the end of March, according to mum Amanda in a Facebook post.

Mitchell has four top-25 rankings for 14-year-old girls, including fifth spot for the 100m back.

Other Northern Tasmanians in the rankings are: Hugh Dolle, Dawson Howell, Georgia Woods, Charlotte Pilsbury-Milne and Jordan Reitsema; and Millie McGregor, from the North-West Coast.

A Swimming Tasmania spokesperson said: "We would like to congratulate all Tasmanian swimmers who achieved a top-25 ranking - a fantastic achievement and one that reflects huge commitment and dedication from the swimmers and their coaches.

"In addition to all the swimmers listed, special congratulations to two of our junior swimmers, Ethan Jones and Daniel Shilcock, who achieved an outstanding 11 and nine top-25 rankings respectively, and to Matilda Smith, Max Giuliani, Ethan Jones and Noah Kamprad who all achieved top-three rankings.

"Well done also to former Hobart Aquatic swimmer Stef McCarthy who achieved seven national top-25 rankings in her age group, including second in 100m freestyle, third in 50m freestyle and third in 100m fly."

The following Tasmanian swimmers are listed on the Australian top-25 rankings for the long-course season, with the number of events in which they achieved rankings:

Ethan Jones (HC) 11, Daniel Shilcock (HC) 9, Noah Kamprad (HA) 7, Hugh Dolle (South Esk) 5, Matilda Smith (SB) 5, Max Giuliani (HA) 4, Sam Askey-Doran (HC) 4, Emily Mitchell (LAC) 4, Dawson Howell (LAC) 4, Olivia Nichols (HA) 4, Georgia Woods (LAC) 3, James Clues (HA) 3, Ella Chan (HA) 2, Tom Ryback (SB) 2, Andrew Nguyen (HC) 2, Jet Jankiewicz (HA) 2, Daniel Wylie (HA) 2, Charlotte Pilsbury-Milne (SE) 1, Jessalyn Potter (HC) 1, Rebecca MacDonald (HC) 1, Millie McGregor (Burnie) 1, Kye Direen (HC) 1, Jordan Reitsema (LAC) 1, Max Powell (HC) 1.

In line with the widespread cancellation of sporting events due to coronavirus restrictions, the School Sport Australia swimming championships, which were to take place in Brisbane in August, have been cancelled along with the rest of the School Sport Australia titles this year.

Swimming Tasmania had received more than 110 expressions of interest, but had not named a team when the cancellation was announced.

SSA president Graeme Jennings said: "The board of School Sport Australia continues to sympathise with students and teachers as we understand many would have begun preparation for this year's championships. However, the safety and welfare of students and teachers plus all other people involved in our championships is paramount to SSA hence the decision to cancel them."