Honestly, you could do both, they should have a well balanced diet. You can do pellets (cichlid gold), frozen or live food and a little bit of vegetable matter.Do i need herbivore pellets or is hikari cichlid gold fine?
Here is a thread about this: https://www.monsterfishkeepers.com/...l-me-what-the-best-food-is-for-mbunas.757249/