Split-level hogfish

The split-level hogfish (Bodianus mesothorax), also known as blackbelt hogfish, black-belt hogfish, coral hogfish, eclipse hogfish, eclipse pigfish, mesothorax hogfish and yellow-spotted hogfish[3] is a species of wrasse native to the western Pacific Ocean and the eastern Indian Ocean.

Split-level hogfish
Specimen from the northeast coast, Taiwan

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Family: Labridae
Genus: Bodianus
Species:
B. mesothorax
Binomial name
Bodianus mesothorax
(Bloch & J. G. Schneider, 1801)
Synonyms[2]
  • Labrus mesothorax Bloch & J. G. Schneider, 1801
  • Lepidaplois mesothorax (Bloch & J. G. Schneider, 1801)
  • Scarus mordax Gronow, 1854

Description

The split-level hogfish is a relatively species which has a distinct blackish diagonal band between the purplish head end of the body and the whitish to yellowish posterior part. The juveniles are dark purple with two lines of bright yellow spots. They are similar to the juveniles of the axilspot hogfish (Bodianus axillaris) although these have white rather than yellow spots.[3] This species can reach a length of 25 cm (9.8 in). The body pattern and colouration of juveniles changes to the adult pattern when they attain a length of 5–6 centimetres (2.0–2.4 in). They take only a few weeks to change completely and intermediate fish are very rarely recorded.[2] The adults are distinguished from the adults of the axilspot hogfish by the dark diagonal band and the lack of spots on the dorsal fin and the anal fin.[3]

Distribution

The split-level hogfish is found in the eastern Indian Ocean as far west as the Nicobar Islands in the Andaman Sea and in the western Pacific Ocean from Japan I the north and Australia in the south as far east as Fiji.[2]

Habitat and biology

The split-level hogfish can be found on reefs at depths of 5 to 40 m (16 to 131 ft), though rarely below 20 m (66 ft). Juveniles inhabit caves in the reef. Adults of this species clean other fish by eating parasites on the body of other reef fish.[2]

In the aquarium

This species can be found in the aquarium trade.[2] It is commonly imported for the fish trade from the Philippines and Indonesia.[4]

References
  1. Russell, B. (2010). "Bodianus mesothorax". IUCN Red List of Threatened Species. 2010: e.T187646A8589079. doi:10.2305/IUCN.UK.2010-4.RLTS.T187646A8589079.en. Retrieved 28 December 2019.
  2. Froese, Rainer and Pauly, Daniel, eds. (2019). "Bodianus mesothorax" in FishBase. August 2019 version.
  3. Dianne J. Bray. "Bodianus mesothorax". Fishes of Australia. Museums Victoria. Retrieved 28 December 2019.
  4. Tristan Lougher (2006). What Fish?: A Buyer's Guide to Marine Fish. Interpet Publishing. ISBN 978-1-84286-118-9.
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