These methods do require some practice. So start now...
https://www.offthegridnews.com/extreme-survival/preserve-fish/Please ignore the Fear and Anxiety hints and just add these skills to your prepper abilities.
If you don't like fish right now, and some people don't include it in their diets, remember that, in a crisis, ANY food source should be considered. The options; living on your stored foods, waiting for a garden to be planted, grown and harvested, stealing from others, etc. are simply short sighted and can get you dead quicker than eating a fish... Eat the fish.