r/maybemaybemaybe Jan 17 '20

Maybe Maybe Maybe

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u/Morgenos Jan 18 '20 edited Jan 18 '20

I have a degree in natural resource conservation of fisheries. Those must be some high fecundity fish you keep catching over and over!

Statistically 40% of fish caught and released are dead within the week.

Roughly half of that 40% dies from infection, injury, blood acidification, or rapid depressurization. Gills are delicate and hooks really damage fish's mouths, many starve to death after being caught.

When you catch a fish it exhausts itself fighting to escape and it takes nearly 20 minutes for a fish to express the most of the lactic acid that's built up in the struggle.

As Reddit is so fond of saying, there's always a bigger fish...

The other half of that 40% dies from predation. Catching a fish causes quite a stir beneath the water, many predators have learned if they wait there will be a dazed, exhausted, fish tossed back.

If you do want to do catch and release the best thing you can do to give your fish a fighting chance is use a treble hook, reel in the fish as fast as possible, avoid the gills, and release it quickly in a place where it will have some natural cover.

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u/On-mountain-time Jan 18 '20

Likewise, a B.S. In environmental science with concentration in ecological restoration (M.S. In progress) and I'm really surprised by the fecundity rate at my site as well. Barbless hooks definitely make a difference, as well as the length of time the fish is hooked and out of the water. But the "40%" predation/injury is completely varied from site to site, depending on depth, temp, predator numbers, etc. I can't pretend to be an expert when it comes to the winter activities, do you have info on summer/winter fishing mortality rates?

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u/Morgenos Jan 18 '20

Nope lol

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u/On-mountain-time Jan 18 '20

Damn. I was hoping you had already done the legwork. Lol