Catch a Yellow Perch is one of the optional tutorial missions you can choose to take on from the Diamond Peak's Outpost noticeboard. You'll find this
I've pulled two diamond yellow perch out of this well known location - Call of the Wild: The Angler
Sauger - Call of the Wild: The Angler Guide - IGN
Photo, Map and Fishing Challenges - Call of the Wild: The Angler Guide - IGN
What does European perch taste like? - Quora
Fish Species - Call of the Wild: The Angler Guide - IGN
Call of the Wild: The Angler - Guide to All Fish Species
Call of the Wild: The Angler [Videos] - IGN
Diamond Yellow Perch! Call of the Wild: The Angler #shorts
Just caught 2 diamond fish in a row trying to catch a simple bluegill : r/COTWTheAngler
flasher Gnatoutdoors
Developer Diary, Finding that Legendary Catch, The Angler
Call of the Wild: The Angler Guide - IGN
Beginner's Guide - Basics and Features - Call of the Wild: The Angler Guide - IGN
Beginner's Guide - Basics and Features - Call of the Wild: The Angler Guide - IGN
Keys to catching Great Lakes yellow perch