Hi Jwet, welcome to the forum. You'll find answers to most of your questions on here. I'm no expert and probably just barely an amateur, but I have read many threads on perch(YP) and Walleye (WE). The best thing I have found on here is using the search function or going to google and type in a search such as, perch site:pondboss.com. There is also a thread with common acronyms to help you understand what fish others are discussing. Your ponds crappie are Getting good size but relative weight (RW) would be important to know i.e. Are they skinny or feeding well. Crappie are probably being helped by overpopulated bass keeping crappie numbers down. Based on body shape of perch, fusiform, they would probably be preferred target of your bass. There are many threads on perch with bass and walleye. Good luck. I'm sure there will be some experts on shortly. Welcome to the forum.