Tagging studies show conclusively that there is only about a 30-50% chance that my released fish will ever be caught again.
you'll have to show me that study, because all the tagging info I've seen from walleyes to hammerhead sharks is between 1 and 20%, and a recatch after that, the percentage falls to almost nothing. I thought the ND walleye tagging % caught & reported was somewhere around 13%
Sorry, I couldn't remember the exact percentages from the ndgf work in the past, I thought it was in the 20% range and rounded up a lot to avert the BS flags from flying in via the other side of the field as 1-20% is even a hell of a lot worse for recatch.
Bottom line though, every time someone posts a pic of 25+ inch walleye that they are holding by the gills with the caption of "caught and released this beauty today" draws a chuckle from me. Fisheries guys have long said that fish is likely to die from internal injuries after being held up like that.