First let me be clear im not saying farming guardians. What I would suggest is to make certain fish ponds have a alpha fish. These fish will not reproduce but will increase the amount of roe or other benifits Examples Icepips ×10, Glacier Fish allows collection of glacier roe Voidcarp x10, angler (creates a glowing spot) allows collection of battery packs Large mouth bass x10, guardian allows guardian roe and rock candy Slimejack x10, mutant carp randomized slime egg and garlic oils Crimson fish I dont got a clue