Orange-lined triggerfish

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Orange-lined triggerfish
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Tetraodontiformes
Family:
Balistidae
Genus:
Balistapus

Tilesius, 1820
Species:
B. undulatus
Binomial name
Balistapus undulatus
(M. Park, 1797)
On the Great Barrier Reef

Balistapus undulatus, known commonly as the orange-lined triggerfish, orange-striped triggerfish and undulated triggerfish, is a demersal marine fish belonging to the family Balistidae, the triggerfishes. It is the only member of the monotypic genus Balistapus.

Description

It grows up to 30 cm long.[1] Its body has a stock appearance, oval shape and compressed laterally. The head is large and is about one third of the body length. The mouth is small and terminal and it has strong teeth.[2]

The first dorsal fin has three spines, one of which is longer and stronger. It is erectile and kept in a dorsal furrow at rest. The second dorsal fin is similar in shape and size to the anal fin, which is symmetrically opposed to it. The pelvic fin is reduced to a ventral protrusion.[2]

The body is dark green with orange lines. The male loses the lines on his snout as he matures. There is a black blotch on the caudal peduncle, and the caudal fin is orange.[1]

Distribution & habitat

It is widely distributed throughout the tropical and subtropical waters of the Indian Ocean and the western Pacific.[1] It inhabits coral reefs, lagoons and external reef slopes at depths up to 50 meters[1]

Feeding

The orange-lined triggerfish has a varied diet based on different benthic organisms such as algae, molluscs, sponges, hard coral tips, echinoderms, and fish.[1]

Behaviour

This triggerfish is diurnal, solitary, and territorial. It can be aggressive with other fish. It erects its first dorsal spine to intimidate opponents and predators.

References

  1. ^ a b c d e Balistapus undulatus. EOL.
  2. ^ a b Lieske & Myers. Coral Reef Fishes. Princeton University Press. 2009. ISBN 9780691089959

External links

  • "Balistapus undulatus". Integrated Taxonomic Information System. Retrieved 12 April 2006.
  • Froese, R. and D. Pauly, Eds. Balistapus undulatus. FishBase. 2013.
  • Bailly, N. (2013). Balistapus undulatus (Park, 1797). In: Froese, R. and D. Pauly, Eds. FishBase. Accessed through: World Register of Marine Species on 27 June 2013.
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