On the reef, the Orchid Dottyback is a zooplankton hunter, darting out from cover to snatch passing prey before retreating to its ledge. This carnivorous habit translates directly to the aquarium, where a varied menu of meaty foods keeps color and condition at their best. Mysis shrimp, brine shrimp, krill, finely chopped marine flesh, and quality carnivore-oriented marine pellets or flakes are all appropriate.

Feeding response is typically excellent, and captive-bred specimens in particular take prepared foods without hesitation. Offer food at least once daily; two or three small meals spread through the day suit the fish's opportunistic feeding style even better. Watch feeding carefully in mixed communities, since an overly assertive tankmate can drive a dottyback into hiding and cost it meals.

This is an active, feisty fish that establishes a territory around a chosen cave or section of rockwork and defends it, though it is generally less aggressive than most other dottybacks. It may chase smaller fish and tends to be intolerant of conspecifics and of fish that share a similar size, shape, or color. Keeping a single specimen is the simplest approach. Pairs and harems have been maintained successfully in larger, heavily aquascaped systems, provided all individuals are introduced at the same time and given abundant hiding places.

Choose tankmates that are larger and visually dissimilar rather than small and docile, while avoiding excessively aggressive species that will bully the dottyback into permanent hiding. In the reef aquarium it is a reliable resident, ignoring soft corals, LPS, SPS, and sessile stinging invertebrates. Reef safety does not extend to every small animal, however: this fish has been observed hunting young bristleworms, small mantis shrimp, and other diminutive crustaceans or benthic invertebrates. Cleaner shrimp, hermit crabs, snails, and urchins are generally reported as safe, so the practical caution applies to prey-sized invertebrates only.