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Author Topic: Redfin in Lake Lyell  (Read 2856 times)

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Redfin in Lake Lyell
« on: December 10, 2014, 10:31:42 PM »
Redfin in Lake Lyell
Source: NSWCoFA


The Central Acclimatisation Society has become aware of the presence of redfin in two new locations, Lake Lyell and Wentworth Falls Dam.

The Society is concerned about the risk that when water is pumped from Lake Lyell to other impoundments that redfin and/or their eggs may inadvertently be transferred from Lyell to uncontaminated waters.

The Society has written to Endeavour Energy, seeking to have screens installed on water intakes in Lyell to prevent the redfin (including larvae and eggs) being inadvertently transferred to uncontaminated waters. The matter is complex are there may be sufficiently severe pressure fluctuations within pumps and in pipelines due to elevation variations to destroy redfin and their eggs. However, the Society understands that their concerns are being seriously considered at the present. Fortunately, no water is being transferred at the moment because of maintenance being undertaken.

Redfin perch, also known as English perch, is native to northern Europe. Redfin were first introduced to Australia in the 1860s and are now widespread across much of NSW, ACT, Victoria, Tasmania, south-eastern South Australia and the south-western corner of Western Australia.

Redfin are voracious predators of other fish and invertebrates, and can destroy recreational fisheries in enclosed waters by building up large numbers of stunted redfin and eliminating other species. They can devastate native fish populations by carrying the epizootic haematopoietic necrosis (EHN) virus. For these reasons, redfin are considered a serious pest and in December 2010 redfin were listed as a Class 1 noxious species in NSW. It is an offence to release redfin in NSW, and that includes returning redfin to the water after capture. It is also an offence to be on possession of live redfin.

There is little doubt that the redfin in Lyell have been introduced by human intervention. The Society is so concerned by the sort of criminality involved in translocating redfin to uncontaminated waters that it is considering offering a substantial reward for information leading to the successful prosecution of such offenders. Perhaps the fact that recreational fishermen are considering offering such a reward will make the criminals responsible for translocating redfin wake up to themselves.

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Re: Redfin in Lake Lyell
« Reply #1 on: December 12, 2014, 09:05:37 PM »
so its been fully confirmed about the reddies in wentworth falls?  does anyone know how big the population of them is? i like to target reddies as they make a great feed also i just kill any unwanted guys.  btw iv seen photos of a guy catching the redfin from the nepean river

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Re: Redfin in Lake Lyell
« Reply #2 on: December 13, 2014, 10:03:00 AM »
Not happy though I'm fairly confident the bass will keep them in check as has happened in other eastern flowing waters, I really wish Fisheries would stock 50000 bass rather than do a press release. The local fly fishers are devastated as its only a matter of time till they make it to TCD.
Charles

 

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