brine

Would it be possible to breed daphnia, cyclops etc in the aquarium tank itself? That they could breed and live there and be eaten sporadically by the fish? Anyone tried this before? I have no experience with these critters, so excuse me if this is a stupid question.

I bought brine shrimp eggs on Ebay to feed my guppy fry but I want to keep some until adulthood so I can get eggs from them how do you breed Brine shrimp I've searched literally everywhere to find out how but I can only find videos of how to hatch eggs not breed adults