A midas blenny, unlike most blennies which are herbivores, requires a meaty diet including finely chopped crustacean flesh, mysis and vitamin-enriched brine shrimp, along with frozen herbivorous preparations, micro and blue-green algae. A mandarin requires copepods but will opportunistically snack on mysis and similar. Should be no interaction between the two. However a midas blenny may antagonize planktivores such as firefish.