On the reef, this damselfish feeds primarily on drifting plankton, taking copepods, amphipods, ostracods, pelagic tunicates, larval shrimp and crabs, and fish eggs from the water column, and it grazes algae as well. That omnivorous habit translates easily to captivity, where a mixed diet keeps color and condition strong.

Build the menu around a quality dry staple such as marine flakes, supplemented with Spirulina or another herbivore preparation, plus meaty items including mysis shrimp, enriched brine shrimp, krill, and finely chopped shrimp, squid, clam, or fish flesh. Offer small portions two or three times daily, or more frequently in smaller amounts, so that food is consumed before it drifts past the rockwork. Most specimens feed immediately and show no reluctance at the first offering.

Wild fish are active during daylight and may gather in aggregations of twenty to thirty individuals around a single coral head, with social groups structured around a territorial dominant male alongside females and juveniles. In the aquarium, that territorial instinct intensifies with maturity. Adults claim a section of rockwork and defend it forcefully, squabbling with conspecifics and harassing other residents. This is an aggressive fish, and it should never be paired with timid or retiring species except perhaps in very large systems where escape routes are genuine.

Better companions are robust, self-assured fish that can hold their ground: dottybacks, larger angelfish, surgeonfish, and triggerfish all make sensible matches. Plan the entire stocking list before the damselfish goes in, because an established adult can make subsequent introductions difficult. For corals, this species is reef safe and poses no threat to sessile invertebrates, which is part of its appeal in mixed reef displays. Exercise judgment with mobile invertebrates, however, since larger specimens have been observed picking at or consuming very small shrimp, crabs, and other benthic crustaceans.