snapper spawning

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Titanium
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Wonder if the warm water temps over winter have something to do with it?? Think the coldest temp in July was 13.2 water temp,6 yrs ago had a swim in july to free a rope and it only 11c
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Post Options Post Options   Likes (0) Likes(0)   Quote Waihime Quote  Post ReplyReply Direct Link To This Post Posted: 22 Sep 2022 at 9:47pm
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In the short term if you are worried about the chance of some crook fish try the shallows up to about 20m and report your findings. The issue does seem to be more prevalent in the 25m plus depths but hopefully this will be scientifically looked into.

To me its not a bad thing leaving the deeper water snapper alone for a bit.

We fish the Bowentown harbour a lot over summer. We’ve had the problem of white mushy flesh on snapper for a number of years in the harbour. These fish are caught in depths of less than 3mtrs. Go outside the harbour to deeper water and we don’t get the problem as much. I initially put it down to warm water in the harbour but the problem is not as bad late in the season where the water temp is at its highest.
Have heard the handling, ice, spawning and many other theories. None stack up from my experience so very interested with what NIWA comes up with. Coms must have to deal with this issue so you would think the scientists would have an answer for it by now.
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Schampy, what size is the mesh on your landing net? Lol

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White fillet snaps not so good, although still fry up ok. Likely poorly nourished fish. Seen same off here ECB and further north last weekend off Cape Rodney. Seems to be more of thing happening when catching fish off foul (kelpies) and where they are over open ground or schooling. Possibly a concern?
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Post Options Post Options   Likes (0) Likes(0)   Quote Schampy Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2022 at 6:12am
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fished out from Tauranga 17 July.. a handful of snapper caught, 1 fish a tad over 50cm has fairly well developed roe, i would have said probably 6-8 weeks from spawning. the other fish either had no signs of roe/milt or just visable.  1 fish had average flesh condtion the others were typical winter snapper with fat.  water temp was just under 15

out from Tauranga again this weekend just gone. all snapper 37-45cm, all had early roe/milt, none futher along than the others...  water temp early 15's  all fish had good fat content, nice and fatty feeling when filleting.
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mate at coro is catching 35-54cm snaps 200 mtres off the beach.its a good season by the look at it .early one i think. water temp up.
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Post Options Post Options   Likes (0) Likes(0)   Quote letsgetem Quote  Post ReplyReply Direct Link To This Post Posted: 30 Nov 2022 at 6:42pm
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I have heard hear-say that it might be caused by a parasite affecting snapper in Hauraki Gulkf and possibly wider. Anyone have any useful info on this?
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We've asked around about this and published a 'news' piece a few weeks ago:

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Originally posted by jpfishingnz jpfishingnz wrote:

We've asked around about this and published a 'news' piece a few weeks ago:

Thanks Interesting   Do you think it may become more common as water warms up? Watching ocean Bounty and they are talking of getting snapper further south,cooler water?
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Post Options Post Options   Likes (0) Likes(0)   Quote letsgetem Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2022 at 11:51am
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For your info - the link above to https://www.fishing.net.nz/fishing-news/skinny-snapper-in-the-hauraki-gulf/ 

shows the following information -

I noticed it first in late autumn this year while running charters. On some days around the workups in 40-50m, as many as one or two fish from the seven-per-person bag limit appeared to be in poor condition.

While not immediately noticeable upon perusing live specimens, after filleting the difference is immediately apparent when compared to normal snapper fillets. The fillets taken from these skinny fish are milky in colour, very thin and have a soft texture. These snapper also prove rather difficult to fillet because of the size and texture of their flesh.  

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Once cooked, it is actually hard to tell the difference in terms of flavour – but they sure don’t look as appetising as your normal firm, translucent fresh snapper!

We’ve been hearing of similar experiences around the traps and a few theories have been postulated, so I called up NIWA to investigate. They were aware of the issue but couldn’t comment; instead, I was pointed in the direction of MPI. Marty Bowers from MPI helpfully gave me an update on the sampling being conducted and the preliminary results.

The difference in normal (left) and ‘skinny’ (right) snapper fillets is immediately obvious – note that all these fish were ikied and iced immediately. Photo: Aaron Styles.

Thankfully, it appears these skinny snapper are not being affected by some nasty disease or parasite, but instead the issue seems to lie in unusual seasonal environmental conditions.

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Biosecurity New Zealand has prepared the following points for public release:

“Biosecurity New Zealand has been investigating widespread reports of snapper exhibiting soft, mushy, and white flesh, from the east coast of the Northland and Auckland regions.

“To date, diagnostic analysis of samples at the Animal Health Laboratory (AHL) has not indicated any disease or parasitic infection as the cause behind the issue.

“Further sampling and testing is being completed to ensure accuracy of these results.

“The issue has also been widely reported to affect trevally within the same area.  Samples will be collected and diagnostic analyses of these samples will also be undertaken at AHL.”


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Spring is supposedly spawn time for snapper.Anytime October to January when water reaches about 18c. Yesterday water temp was around 12.9c.

On gutting the snapper noticed no roe/milt unlike other years at this time,guts full of mussel.crabs.
But the gurnard had roe.

Is it going to be a bad spawning season? Is the milky flesh the cause?
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