We feed our Fish cichlid pellets, JBL Nova rift sticks, spirulina flakes as well as a cucumber, zucchini slices.
Supplemented by brine shrimp now and then as well as Seriously green tucker, that has small crustaceans and insect larvae not sure what kind of crustaceans or insect larvae , but they are all fine and have been fed that from young.
They breed very well and seem happy! ( The Male's are that's for sure)