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Fisher_Boats
11-02-2005, 03:34 AM
Hi,

Does anyone know the right place to spike the air bladder in Maori Cod
so that they can be successfully released?
Any help would be appreciated

Cheers Col
Jeremy
11-02-2005, 03:42 AM
same for all demersals - take a line horizontally back along the fish in line with the top of the pectoral fin, and a line down from the second spike on the first dorsal fin. Where these two lines meet is where you want to insert that needle or spike.

Jeremy
Tony_N
11-02-2005, 04:23 AM
Jeremy

did you mean the top or the tip of the pectoral fin?

I did a search and found

http://www.leadertec.com/Catch_release.html

He shows a diagram - does he have it wrong?

Tony
Fisher_Boats
11-02-2005, 04:38 AM
Tony,Jeremy
Thanks for that
we tried spiking them too far fwd by the look of the sketches and we where going to prick it again when it stays hanging out of it's mouth. Glad we didn't.
They seem to really blow up compared to some of the other species?
I believe it's bad for the system if you take to many maori or other cod off a bit of reef.
agnes_jack
11-02-2005, 04:48 AM
Tony
The DPI handbook says that you should draw a line from the top of the pectoral, and below the fourth or fifth dorsal spine. We use a 16guage syringe.
Another option is to use the release weights, then no surgery is required.
Thats probably the better option.

Regards, Tony
Fisher_Boats
11-02-2005, 04:53 AM
Tony,
Excuse my ignorance but what are release weights?
Cheers Col
Tony_N
11-02-2005, 05:29 AM
Tony

Just looking again at the pic on the website I quoted. I think the distended swim bladder would be the shaded areas and in that case "top" of the fin makes sense. 4th or 5th dorsal spine seems right on the diagram. 2nd spine might be a bit hit and miss (I mean, according to that diagram, not that Jeremy has got it wrong).

Tony
Jeremy
11-02-2005, 06:54 AM
OK, I'll change from 2nd dorsal spine to 4-5th, still in line with the top of the pectoral.

Onya Col for doing the right thing.

Jeremy
Fisher_Boats
11-02-2005, 07:04 AM
thanks Jeremy
We keep a feed... but I've taught my young guys to release what we don't need (which was hard) now they get a real kick out of letting them go.
Digital cameras help matters :)
Cheers
Col
agnes_jack
11-02-2005, 07:52 AM
Col
The release weights are a sinker, (about 16 oz) with a barbless hook set into the top the weight is hooked thru the bottom jaw of the fish. The hook has a crimp at the top of the bend and a swivel behind that. A strong line is attached to the swivel and once the fish is back to the bottom, a pull and a jiggle will pull the hook out of the jaw. This allows the fish to recompress without crude surgery.
This is probably confusing, so I will post a photo.

Regards Tony
agnes_jack
11-02-2005, 08:03 AM
A bit blurry
As you can see though the crimp allows the weight to be lifted straight up.
Thunderbird
11-02-2005, 03:19 PM
Yeah sorry i forgot to tell you about that, We don't have a needle to do it but use a thin knife just behind the pec fin which works. You'll hear the air escape when you've got the surgery right. swim them for a while and they should b ok.
Such a nice fish deserves to fight another day.
Cheers roota.
Jay_S
11-02-2005, 04:25 PM
Thanks Tony,
That's what I love about fishing and boats.
You learn something new everyday. ;)
Cheers
Col