Red Diana Hogfish (Bodianus Diana) saltwater aquarium fish portrait

Bodianus diana is an Indian Ocean wrasse ranging from the Red Sea and the East African coast eastward to the Nicobar, Christmas, and Cocos-Keeling islands. Adults carry a purplish to reddish-brown head and upper body that transitions into yellowish sides, each scale outlined in dark pigment, with a row of pale spots running below the dorsal fin and bold black markings on several fins. Juveniles look like a different animal entirely: reddish brown, broken up by white blotches, with pronounced black spots on the fins that fade as the fish matures.

Adults reach roughly 6 inches, and a 50-gallon aquarium is the practical minimum for long-term housing, with larger systems giving this active swimmer more room to patrol. Build the layout around substantial rockwork, using shelves, branches, and crevices that provide sleeping sites and retreats, and leave broad stretches of open water in front of the structure. Choose a substrate that tolerates disturbance, since this hogfish will blow into sand while hunting for buried prey. No special mature-system requirement is documented for the species, so a stable, well-established tank with good flow and clean water is sufficient.

In the wild, Bodianus diana works the bottom for hard-shelled benthic invertebrates, concentrating on worms, crustaceans, and mollusks. Aquarium accounts add snails, mussels, and fish small enough to swallow to that list, which reflects the crushing dentition and opportunistic habits typical of hogfishes.

In captivity, offer a varied meaty menu: mysis shrimp, vitamin-enriched brine shrimp, blackworms, chopped shellfish such as mussel, and marine-based frozen or flake preparations. Feed two or three times daily in modest portions rather than one heavy meal, which suits the fish's constant foraging rhythm and helps maintain condition. No particular feeding-acclimation difficulty is reported for this species.

Mysis Shrimp Vitamin-Enriched Brine Shrimp Blackworms Chopped Mussel Marine-Based Frozen Foods Marine Flake Food
This is a bold, constantly active fish that establishes a territory around its chosen rockwork and returns to the same crevices to sleep. It spends the day cruising the open water and probing the substrate for prey, so a layout that combines dense structure with clear swimming lanes suits it best. Keep only one specimen per aquarium; additional Red Diana Hogfish and similarly colored fishes tend to draw persistent aggression.

Select tankmates that can hold their own, such as groupers, larger angelfishes, hawkfishes, and moderately assertive triggerfishes. Very small or timid fish are poor choices, as they may be harassed or eaten outright. On the invertebrate side, corals are generally left alone, but ornamental worms, crustaceans, snails, mussels, and other vulnerable invertebrates are fair game, so this hogfish fits best in a fish-only-with-live-rock system or a reef stocked without prey-sized invertebrates.

FAQ

Frequently Asked Questions

About the Red Diana Hogfish

  • How large does the Red Diana Hogfish get, and what tank does it need?
    Expect an adult length of about 6 inches. A 50-gallon aquarium is the minimum for adult housing, arranged with heavy rockwork for shelter and open water for swimming.
  • Is the Red Diana Hogfish safe in a reef aquarium?
    Corals are typically not targeted, so it can be kept in a reef. Worms, crustaceans, snails, mussels, and other small invertebrates are at risk and should be considered expendable.
  • Which tankmates work best with this hogfish?
    Robust, similarly sized fishes such as groupers, larger angelfishes, hawkfishes, and moderately assertive triggerfishes are appropriate. Avoid very small fish, similarly colored species, and a second Red Diana Hogfish.