Department of Primary Industries staff released 1,000 trout into Lake Wentworth Falls to fight bluefin tuna | Blue Mountains Gazette

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Staff from the NSW Department of Primary Industries have released 1,000 trout into Wentworth Falls Lake as part of the annual fish restocking programme.

Don Barton, secretary of the Central Acclimatization Society, said the trout were much larger than those released in previous years – 230mm long, instead of the 100mm fry – to tackle the “big problem” fish harmful”.

The larger fish, paid for by NSW recreational fishing fees, were needed to withstand the impact of the ‘big problem’ of the highly piscivorous redfin (English Perch), a noxious fish that had been illegally released into the lake there a few years ago, he said.

The release of the fish from the lake took place on Wednesday January 12 – they had traveled from Gaden Trout Hatchery in Jindabyne.

“People should be aware of the environmental damage that can be caused by the dumping of unwanted aquarium specimens, pet ducks and even garden waste,” Barton said.

“In the case of the redfin, the action is more than reckless, it is an act of criminal arrogance, committed by people too incompetent or lazy to pursue harder-to-catch fish, such as trout and Australian bass. which are present in the lake.

“Local anglers should be able to enjoy a good sport chasing trout in the near future. Unlike bluefin tuna, neither trout nor bass can spawn in the lake, but future releases will maintain the numbers .”

Trout must be able to run to running water and make nests to lay their eggs in coarse gravel stream beds and bass must descend into salt water to spawn.

Adults need a fishing license to fish and most trout will need an additional six weeks to reach a legal size of 250mm. A Recreational Permit costs $35 per year and can be purchased in line through DPI or at tackle shops, where anglers can check catch limits (in Wentworth Falls it’s five) and sizing.

He said there were still plenty of large trout in the lake that survived previous fish stockings.

And anglers were encouraged to “catch and kill as many redfin as possible, as this will improve the size of catchable fish”.

“Bluefin tuna reproduce rapidly, overcrowding the water body and depleting food resources, resulting in a myriad of stunted fish that are of no use to anyone,” he added.

He joked that it was a “state secret” of the places in the lake where the trout had been released, but added that some children had spotted the release “and are coming back next week to fish”.

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