Thats the one Gazza!!
We have been making them out of one pound snapper leads, they work very well.
Regards, Tony
Tony, what is a fourth of fifth dorsal spine?Originally Posted by agnes_jack
The correct way to vent a fish according to the QLD DPI is to pierce the area directly below the fourth or fifth dorsal spine in a line with the upper part of the pectoral fin base. We use a 16 guage syringe, available from most chemists. Do not pierce any visible part of the swim bladder i.e. the bit hanging out the mouth, as this will severely limit the chances of survival.
Anyone who is serious about releasing fish in deepwater should also look at having one of the release dropper weights on board as well, can in some cases save the need for crude surgery.
Regards, Tony
Mick
The dorsal fin is on top of the fish!
Count the spines from the front of the fish, the 4th and fifth ones are the ones after the first second and third ones.
Regards, Tony
lmao
thanks for the explanation Tony I actually had the same question....
There is a current study being undertaken by the DPI into the releasing of fish
suffering Barotrauma (fish usually caught in water deeper than 10 metres)
6 species of fish are targeted. Coral Trout, Red Emporer, Red Thraot Sweeties
Large and Small mouth Nannies and spangled emporer.
Gladstone Sport Fishing Club was recently involved where we chartered a boat
for the weekend with the sole prupose of tagging reef fish. Approx 160 fish were
tagged and then released using 3 different methods. 1. straight return to the water
2. venting air bladder 3. using the dropper weight.
It is hoped to tag 600 fish per year over 3 years.
Hopefully there will be enough tag returns to get some useful info to suggest the best
method of release.
On a personal note, last time we were out we caught an undersize Emporer from 30 metres that had been tagged 3 months earlier in the same location. Not to sure
how the nannies will go as they really blow their eye out from that depth.
Cheers
Steve
Tabs
The red emperor seem to have no trouble returning back to the bottom without any assistance at all. We have been tagging quite a few and the general consensus is that they stay in one area while they are juveniles. We caught one that had been tagged and re-captured 7 times in the same area,6 times was by the fella who had originally tagged the fish!!
We have caught a few that have been tagged and the tag has been snipped off about halfway down it's length. We assume that is from other fish biting the tag off.
As you say the nannies don't look too healthy when they come up from depth, have you heard of any tag returns on them at all?
Regards, Tony
Hi Tony,
There has been a few recaptures of late, but unsure of the release method.
Steve
amazing stuff with red emperors....
Tony how deep do you go with the 16 gauge?
Dicer
You havegot to make a guess based on the size of the fish, but generally if you angle the needle slightly toward the front and listen for the escaping air, you will know when you have gone in far enough.
Regards, Tony
Bill Sawynok in Rocky has put together an excellent web site with loads of information on it including best practice for releasing fish.
http://www.info-fish.net/releasefish/default.asp
There are facts sheets for loads of species, though they take a little while to load if you have dial-up internet.
Thats a great site Jonno!!
Some good info on there for those who are interested.
Regards,Tony
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