I'm level 17 and have constantly been grinding fish&bugs and the best I have gotten is one Rainbow Trout and a few Miyama Stags. All other >100 bell selling price bugs/fish seem so difficult to find!! Anyone else the same?
I've gotten a rainbow trout, a football fish, a koi and the jeweled beetle and an emperor butterfly. So I mean it's not super hard, it's just random. Obviously if they were easier to come by they wouldn't be worth as much.
That's the point though, for how hard they are to find they aren't worth much at all