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Marathon fish tale

by
May 11, 2016

A Golden Perch is on its way to a new record after swimming a marathon 1923km in six years.

A golden perch has provided some inspiration for Australia’s swimmers on their way to Rio with a 1923km-long swim that took the fish six years.

Department of Environment, Land, Water and Planning scientist Jarod Lyon from the Arthur Rylah Institute said the fish was recaptured during fish monitoring work in the Goulburn River last week, after originally being tagged below Lock 3 in the Murray River, near Overland Corner, west of Renmark in South Australia, in October 2010.

‘‘Our monitoring has detected this fish several times throughout its journey including visits to Yarrawonga and Lock 6 near the South Australian border,’’ Mr Lyon said.

‘‘Those detections have shown that nearly 1500km of the marathon swim took place in just seven months.’’

Mr Lyon said the fish had managed to grow by 10cm during its marathon swim.

It was 36cm when it was tagged and is now more than 46cm long.

‘‘We know these fish move about quite a lot to spawn and in response to changing conditions in the river but this is a significant distance for this species to cover,’’ he said.

‘‘The biggest recorded movement we’ve had for a golden perch is about 2000km, so this fish is approaching that record.’’

The surveys were conducted as part of a DELWP program looking at management of fish habitat in Victoria.

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