Diana’s Pigfish

Bodianus Diana
Dianas_s Pigfish - Marinewise © 2023 MarineWise

Quick Facts

Scientific name Bodianus Diana
Other names Diana's Hogfish, Diana's Wrasse
Size Up to 17 cm (6.6 in)
Weight Under .20 kg (.44 lb)


Habitat & AU Distribution Coastal waters amongst coral rich seaward reefs
Depth Range 3 - 50 m (164 ft)
Diana's Pigfish Distribution

Interesting Info

  • Diana’s Pigfish are not widely distributed across Australia, found along the northern coast of Queensland and Western Australia from the North West Cape to the Kimberley region coastline.
  • They have a distinctive appearance, with adult males displaying vibrant colours, including a reddish-pink body with blue lines and spots. Females and non-breeding males have a more subdued coloration, typically exhibiting mottled patterns of brown, yellow, and white.
  • Diana’s Pigfish are carnivorous predators that primarily feed on small invertebrates, including crustaceans, molluscs, and worms. They are known to selectively feed on coral polyps and exhibit territorial behaviour while foraging in their reef habitat.
  • These fish often exhibit strong associations with specific coral species. They utilise the coral structures for protection, territoriality, and foraging opportunities.
  • They are known to exhibit social behaviour, forming loose aggregations or small groups within their preferred reef habitats. These groups can consist of both males and females, and they may interact and communicate with each other through various visual displays and movements.
  • Diana’s Pigfish are protogynous hermaphrodites, meaning they have the ability to change sex from female to male during their lifetime. When a dominant male is absent from a group, the largest and most dominant female will undergo a sex change and assume the role of a male.
  • Their estimated average lifespan is up to 8 years.
Species Interaction

Aquarium, Snorkeling & Diving

Diana’s Pigfish are not commonly found in home aquariums due to their aggressive behaviours towards other fish. Typically found in well established tanks with carefully matched tank mates. Snorkelers and divers can identify and observe them in their natural habitat fairly easily due to their vibrant coloration. They are generally not shy and can be quite curious, allowing for close-up encounters.

Scientific Classification

Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Perciformes

Family: Labridae

Genus: Bodianus

Species: Bodianus Diana

Conservation Status

The Diana’s Pigfish is currently classified as a species of ‘Least Concern’ in Australia. This means that they are not currently at significant risk of extinction or population decline.

Diana’s Pigfish
As Aquarium Fish

Care Level: Difficult

Temperament: Very Aggressive

Diet: Carnivore

Reef Compatible: Yes

Minimum Tank Size: 150 gallons

Recreational Viewing
- Snorkeling & Scuba

Finding: Intermediate

Temperament: Curious

Location: Inner Reef, Outer Reef, Lagoon

Danger: None

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