I found this intereresting: https://www.topic.com/how-to-kill-a-fish
Just put the fish on good crushed ice, burying the entire body and keep the ice chest drained for best tasting fish except for tuna which are bled out first. Who's going to read all that crap except the writer who wrote it? Writers of small articles like that get paid by the word. That's why they explain how to build a watch when all you asked was what time it is.
Fishing can be anything you want it to be