Hi PB,
I have thought about this subject often. The thought of fresh fish fried up in the morning is a nice thought. And yes I know how easy they can be to catch in the evening.
But I just don't like the idea of stressing out these animals on a stringer for that long. Its extremely stressful for the fish. I don't believe in any hocus pocus, or religion or spirits or spirituality or supernatural anything, or karma. But on that last one, karma, I like to behave as if there is karma, because I think it is a good code of practice. E.g. When I catch a fish to kill and eat, I try and dispatch the fish immediately. I may have it on a stringer out in the canoe out of necessity, but when I come to shore, fish are dispatched. If fishing from shore, I dispatch the fish immediately. Ice fishing I also dispatch the fish immediately. I don't like when fishermen let the fish flop around on the ice to die slowly. I need to eat, fish are food for me, and I respect the fish. I want there to be fish in the future, and I want to catch fish in the future, and I don't want the animals suffering unduly. Its not anthropocentric, the fish are not "mine", I am just a predator in the mix. Predator-prey is what life is all about, and these fish I am catching are predators themselves which have killed and eaten many fish in their day and now its their turn, but they deserve respect as critters which share the planet with us, so I am just saying.....
During the day when I have caught fish on a lay over day, around camp I have bagged fillets and rocked them down in the water to stay cool, and I will be eating them for dinner same day. Zip locks are not odour proof. This is done in the north, usually north of snapping turtle distribution. I also keep my eyes open for gulls and otters. Gulls are very observant and very bold, so you need to camo the bag with lots of rocks.
Everywhere I travel in the north I see otters and otter sign everywhere, including otter poo on just about every campsite and portage trail. I cannot recall the last time I did NOT see otter poo on a campsite (e.g. those scats with crayfish parts in them are very distinctive). They like to loaf around "our" campsites when we are not there, I guess because its open with good site lines for predators. Where I travel, I just cannot see an otter passing up a free meal if they can detect it, so if fish are on a stringer overnight, there is a risk of otter predation.
Bears are very clever, and if there is any fish scent on that rope you attached to a shrub to get that stringer out deep...well a bear might just figure it out. Maybe lower risk, but why risk it and the train up a bear for future travelers on that campsite.
So I am anti keeping fish on a stringer for a long time. Fish can be easy to catch very early in the morning too…but I tend to sleep in and miss that magic window of "sure-thing" catch-ability.
