I can't believe no-one is mentioning Neherrin River. If you elect to keep them it’s a 25000 fine. You have to releas them so don’t cry when you see 4 grand go back into the water.

Germany and Russia high level lakes and to be honest with you the others offer better cash and xp unless you want Beluga For xp. Italy is similar to falcon where there are a ton of trout and the asp is definitely worth pursuing for cash and xp. Holland I’d stay away from unless you target the Zander. Europe Czech lake cheap and can catch a ton of fish with multi rod setup. Alaska lots of options but the chinooks are the way to go. Carp there are ok as well and both sturgeon and chinooks are good too.

San Joaquin for sturgeon at night nothing better especially with multiple rods and spawn sacks.

Walleye here as well but they aren’t as active as emerald but they get bigger much bigger. Michigan for pike, clear muskies and muskies on sunny days, and blue catfish. Everglades is great but the good gear doesn’t come til level 27-28. Then once you unlock falcon the trout using narrow spoon. Once you unlock New York and narrow spoons then walleye at emerald. Beginner level spotted bass at lone star.

Rocky lake fishing planet trout map