Abalistes filamentosus

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Abalistes filamentosus
Abalistes filamentosus JNC2724 Body.JPG
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Tetraodontiformes
Family: Balistidae
Genus: Abalistes
Species:
A. filamentosus
Binomial name
Abalistes filamentosus
Matsuura & Yoshino, 2004

Abalistes filamentosus, the hairfin triggerfish, is a species of marine ray-finned fish belonging to the family Balistidae, the triggerfishes. It is found in the Indo-Pacific Ocean and in subtropical waters. It lives in the Pelagic-Neritic zone of the ocean between 61–180 meters deep. It is harmless to humans. [2] [3]

Contents

Taxonomy

Abalistes filamentosus was first formally described in 2004 by the Japanese ichthyologists Keiichi Matsuura and Tetsuo Yoshino with its type locality given as off Itoman on the south coast of Okinawa-jima Island in the Ryukyu Islands. [4] This species belongs to the family Blaistidae, which is included in the suborder Balistoidei within the order Tetraodontiformes. [5]

Etymology

Abalistes filamentosus is classified within the genus Abalistes, a name which prefixes a-, meaning "not", with Balistes, the genus that A. stellaris, a synonym of A. stellatus, was considered to belong to. The specific name, filamentosus, means "filamentous", an allusion to uppermost and lowermost rays of the caudal fin being highly elongated into filaments. [6]

Distribution

Abalistes filamentosus is found in the marine and subtropical waters of the Indo-Pacific, especially in the range of the Ryukyu Islands to the North West Shelf of Australia, and the Timor Sea. It was also reported in New Caledonia. [3] [7]

Description

The tail and its characteristic filaments Abalistes filamentosus JNC2724 Tail.JPG
The tail and its characteristic filaments

Abalistes filamentosus has a total of three dorsal spines, 25-27 dorsal soft rays, 22-25 anal soft rays, and 14-15 pectoral rays. The upper and lower rays of the caudal fin are formed from filaments. The spinal dorsal fin is dark brown, and the body has now yellow or light blue spots. The dark brown color gradually becomes white ventrally, and its cheek is brown with a tint of green. Its cross section is compressed and lateral lines are not interrupted. [3]

Parasites

Abalistes filamentosus is a common host to ectoparasites, especially to copepods in the genus Hatschekia in the Ryukyu Island area. [8]

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References

  1. Matsuura, K. (2022). "Abalistes filamentosus". IUCN Red List of Threatened Species . 2022: e.T193585A2243505. doi: 10.2305/IUCN.UK.2022-2.RLTS.T193585A2243505.en . Retrieved 17 October 2024.
  2. Matsuura, K. & Yoshino, T. (2004): A new triggerfish of the genus Abalistes (Tetraodontiformes: Balistidae) from the western Pacific. Records of the Australian Museum, 56 (2): 189–194. Archived 2015-09-25 at the Wayback Machine Open Access logo PLoS transparent.svg
  3. 1 2 3 "Abalistes filamentosus". www.fishbase.org. Retrieved 16 February 2015.
  4. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Balistidae". Catalog of Fishes . California Academy of Sciences . Retrieved 16 October 2024.
  5. "Eschmeyer's Catalog of Fishes Classification". Eschmeyer's Catalog of Fishes. California Academy of Sciences . Retrieved 16 October 2024.
  6. Christopher Scharpf (21 August 2024). "Order TETRAODONTIFORMES: Families MOLIDAE, BALISTIDAE, MONACANTHIDAE, ARACANIDAE and OSTRACIIDAE". Christopher Scharpf. Retrieved 17 October 2024.
  7. Randall, J. E. & Justine, J.-L. 2008: The triggerfish Abalistes filamentosus from New Caledonia, a first record for the South Pacific. Cybium, 32, 183-184.
  8. "Abalistes filamentosus Matsuura & Yoshino, 2004". www.marinespecies.org. Retrieved 16 February 2015.