Something I've always wonder about I'd that people say sacks are better than retaining slings because the fish can sit in the deeper more oxygenated water, but isn't the surface where the oxygen is? That is where the gas exchange occurs and if you've ever seen a pond with low oxygen levels the fish are at the surface.
In reply to Post #1
Yes generally it is the surface layers that have the highest d.o. levels.
Sometimes these levels are actually higher than is comfortable for the fish, hence why sacked fish will sometimes sit at the surface and at other times they'll choose to sit at other depths.
The simple failsafe thing to do is to not retain any fish for longer than it takes to get your camera set up.
Yes generally it is the surface layers that have the highest d.o. levels.
Sometimes these levels are actually higher than is comfortable for the fish, hence why sacked fish will sometimes sit at the surface and at other times they'll choose to sit at other depths.
The simple failsafe thing to do is to not retain any fish for longer than it takes to get your camera set up.
In reply to Post #1
depends on a few factors really.
Temps, water flow, wind flow, type of lake bed material/make up, amount of weed etc
depends on a few factors really.
Temps, water flow, wind flow, type of lake bed material/make up, amount of weed etc
In reply to Post #3
Day vs night is a huge factor too
Day vs night is a huge factor too
In reply to Post #4
Diurnal oygen fluctuations...
Diurnal oygen fluctuations...
In reply to Post #4
indeed, massively,
best time to take readings is first light, that will give you your lowest readings
weed gives o2 during day, takes during night time
warmer the water, lower the capability of it holding DO
indeed, massively,
best time to take readings is first light, that will give you your lowest readings
weed gives o2 during day, takes during night time
warmer the water, lower the capability of it holding DO
Im posting this Purely out of interest I think its well worth reading !
I think it was 1974-76 ?
and the BCSG had a conference in Loughborough University
and one of the invited speakers was a Fish biologist this professor had a long list of credentials after his name a very clever man
and his topic was fish care he covered so much but the most interesting was
the FISH DEATHS that we can cause !!!!!
I really cant remember the exact name of it but we have a type of it called Adrenaline !
and when we hook a Carp the fish produces an Adrenalin equivalent the BIGGER the fish apparently the more dangerous it is as they produce much more
he explained after you have unhooked weighed and trophy shot
IF YOU THEN RELEASE IT OFTEN it will swim away go into this type of Adrenaline shock AND DIE !!!
BUT the very simple solution is its essential to rest the fish preferably in a dark sack for a minimum of 20 to 30 mins to allow the fish to calm down and this Adrenaline equivariant to dissipate
I know of at least ONE big fish carp lake in France where this rule is in place and the owners confirmed since its introduction fish losses have dropped
/
I think it was 1974-76 ?
and the BCSG had a conference in Loughborough University
and one of the invited speakers was a Fish biologist this professor had a long list of credentials after his name a very clever man
and his topic was fish care he covered so much but the most interesting was
the FISH DEATHS that we can cause !!!!!
I really cant remember the exact name of it but we have a type of it called Adrenaline !
and when we hook a Carp the fish produces an Adrenalin equivalent the BIGGER the fish apparently the more dangerous it is as they produce much more
he explained after you have unhooked weighed and trophy shot
IF YOU THEN RELEASE IT OFTEN it will swim away go into this type of Adrenaline shock AND DIE !!!
BUT the very simple solution is its essential to rest the fish preferably in a dark sack for a minimum of 20 to 30 mins to allow the fish to calm down and this Adrenaline equivariant to dissipate
I know of at least ONE big fish carp lake in France where this rule is in place and the owners confirmed since its introduction fish losses have dropped
/
In reply to Post #1
I think thinking anglers have nailed the problem with the sling they sell
Pull the floats out and it's a sack
Put them back in and it's a floating retainer.
I think thinking anglers have nailed the problem with the sling they sell
Pull the floats out and it's a sack
Put them back in and it's a floating retainer.
In reply to Post #7
That's interesting Gerry
That's interesting Gerry
In reply to Post #7
It's shock from lactic acid build up.
That's why all new knowledge says rest a fish in the net for some time BEFORE removing from the water, and again BEFORE being released.
It's shock from lactic acid build up.
That's why all new knowledge says rest a fish in the net for some time BEFORE removing from the water, and again BEFORE being released.