Bangaii Cardinals

[canadawest]

Hey I just bought a pair of Bangaii Cardinals from J&L Aquatics yesterday, and I'm wondering what those of you who already have them are feeding them?

I usually feed a variety of flake food daily, and homemade frozen seafood two or three times a week. So far they don't even look at the flake, but I haven't fed any frozen yet (as I'm actually out right now)

Will I have to go out and buy some shrimp pellets or spirulina or something else?