This laker study is interesting and sort of discussion worthy.
Seems that older big lake trout do not age like me and you. They continue getting bigger as they age and the older they get does not affect their fertility, where other animals and humans only grow so big and lose their fertility as they age. And as a laker gets bigger it no longer has any predators which contributes to their long lives too.
https://theworldnews.net/ca-news/old...-without-aging
It makes me think other fish species are maybe the same. The biggest pike I've seen close up don't look old. If so, there is validity to letting the big fish go. I've kept big fish over the years and now not sure I would.
This also tells me eating the same diet in the same environment for a lifetime may contribute to longetivity.