How do people plan out their calories and food with caught meals in mind? Just a general question, but feel free to talk about a specific trip - like how many meals would you (if any) rely on catching for a 3 day trip? Assuming you know the trail and have experience at a particular watering hole or river.

New to the idea of fishing on the trail, and I am hoping to take several 2-3 night trips this spring and summer where I do a lot of fishing. I know at first I will pack with all the food I normally would, but was wondering how much people are willing to risk leaving behind and rely on fishing.