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SA Aussie can do it

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    Posted: 13 Jan 2021 at 5:44pm
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Titanium
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https://www.premier.sa.gov.au/news/media-releases/news/snapper-boost-more-than-300,000-baby-fish-to-be-released

South Australian snapper stocks are about to get a significant boost with more than 300,000 fingerlings to be released in both the Spencer Gulf and Gulf St Vincent over the coming months.
 

Why is NZ not doing this??
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Post Options Post Options   Likes (1) Likes(1)   Quote Rozboon Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jan 2021 at 6:14pm
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Originally posted by pjc pjc wrote:

 
[/DIV][DIV]Why is NZ not doing this??[/DIV][/DIV]


Dunno.

https://www.stuff.co.nz/business/farming/aquaculture/87522652/sustainable-snapper-piped-out-to-sea

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Post Options Post Options   Likes (1) Likes(1)   Quote cirrus Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jan 2021 at 6:28pm
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Best idea is to not let stocks get so low in the first place.


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Post Options Post Options   Likes (0) Likes(0)   Quote Alan L Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jan 2021 at 7:01pm
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Yes - if our fishing was sustainable and biomass kept above 40% (think it is), there should be no need?
So is the seeding programme a sign of success or failure of a fishery policy.
Or a long term fish farming process.
You would think it is a cheaper option to leave stocks above a certain level.
This practise is not uncommon in trout localities (but dwindling over time I think). But then there is a revenue stream from licenses and there is no commercial trout fishing.
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Post Options Post Options   Likes (0) Likes(0)   Quote MB Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jan 2021 at 9:28pm
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Originally posted by cirrus cirrus wrote:

Best idea is to not let stocks get so low in the first place.

+1

Stocking to replenish a stock while making big changes to quota, fishing practices etc makes sense. Stocking while keeping everything else the same is just a sticking plaster. Why not just send the fish straight to the fish & chips shops?
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Post Options Post Options   Likes (1) Likes(1)   Quote cirrus Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jan 2021 at 10:32pm
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Having to supplement wild stock with captive bred fish is often a reflection of previous poor fishery management.
And there are risks. 
Captive Atlantic salmon released into the wild have fewer offspring.
And overall a decrease in population productivity has been seen.

If we do the same with snapper there are always possible risks.
Releasing weaker fish to mix and breed with wild fish is one. 
Introducing cage bred disease into the wild is another possible risk.
A wild bred fish has to be tough to survive. Only the very strongest make it.
Do weaker fish survive the captive breeding process,only to be be released and interbreed with wild fish.?

Best solution. Look after what we have. We only have it once. 
With good management a tough wild stock will rebuild itself and still remain a tough ,resilient wild stock.
We do our bit,the fish will do their bit
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Post Options Post Options   Likes (0) Likes(0)   Quote Big -Dave Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jan 2021 at 10:56pm
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The weaker fish will feed the sharks....leave the strong smart ones for us...
you can't fix an idiot with duct tape, but it does muffle them for a while...
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Post Options Post Options   Likes (0) Likes(0)   Quote kimber7wsm Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jan 2021 at 6:37am
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With the way the current systems works, it would just give the commercial boats more to plunder. 

If they use it has part of a major re-structure/rebuild process, I can see it would speed that process up. This may make a restructure to QMS far more palatable to commercial interests if it cuts down on rebuild time. Although the risks would need to be assessed, generally there's never a free lunch so to speak.
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Post Options Post Options   Likes (0) Likes(0)   Quote pjc Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jan 2021 at 7:03am
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Originally posted by Rozboon Rozboon wrote:

Originally posted by pjc pjc wrote:

 
Why is NZ not doing this??


Dunno.

https://www.stuff.co.nz/business/farming/aquaculture/87522652/sustainable-snapper-piped-out-to-sea

It appears it may of increased stock from a soft limit to almost 39% bio mass but report does not directly say if due to breeding/release programme,which is a shame be interested to know.

https://docs.niwa.co.nz/library/public/FAR2020-09.pdf

Stock biomass is predicted to have declined substantially from 1950 to the mid-1980s due to high levels of catch, particularly during the late 1970s and early 1980s. The assessment estimates that stock biomass had been reduced to approximately 6% of the unexploited (SB0) level by the mid-1980s, and the stock remained at about this level throughout the 1990s and early 2000s. Since 2009, stock biomass has increased rapidly and current (SB2018 or 2018/19) biomass is estimated to be at 39% of the SB0 level.  
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