Pacific Squaretail, Tetragonurus pacificus Abe 1953


Other Names: Pacific Square-tail, Ravenfish
Summary:
The Pacific Squaretail is known in Australia from larvae collected off Yonge Reef,  Queensland.

Cite this page as:
Bray, D.J. 2019, Tetragonurus pacificus in Fishes of Australia, accessed 26 Jan 2022, https://fishesofaustralia.net.au/Home/species/1209

Pacific Squaretail, Tetragonurus pacificus Abe 1953

More Info


Distribution

Known from larvae collected off Yonge Reef, Great Barrier Reef, Queensland. Elsewhere the species is known from scattered localities in the subtropical Indo-Pacific.

Features

Dorsal-fin spines X-XI, 11-13; Anal fin I, 10-11; Pectoral fin 16; longitudinal scale rows along body axis 72-80; predorsal scales 17-20; Vertebrae 40.
Head length 26.1-28.6% SL; orbit diameter 7.3-8.9% SL; and longest pectoral-fin ray length 14.3-15.5% SL.

Colour

Blackish-grey with greenish reflection on lateral body axis, yellowish reflection on ventral region; head black with silver to gold reflection on cheek and operculum; dorsal surface of head, snout and lower jaw solid black; dorsal, anal, pelvic, and caudal fins blackish-grey, membranes paler; pectoral fin black.

Similar Species

Tetragonurus pacificus differs from T. atlanticus and T. cuvieri, in having fewer vertebrae (39–43, vs. 44–51 in T. atlanticus and 52–58 in T. cuvieri, respectively), 10–11 (9–12) first dorsal-fin spines (vs. 13–17 and 16–21, respectively), and 72–80 longitudinal scale rows along body axis (vs. 93–95 and 97–114, respectively) (Koeda & Teramura 2019).

Species Citation

Tetragonurus pacificus Abe 1953, Japanese Journal of Ichthyology 3(1): 45, figs 5-6. Type locality: west of Solomon Islands, western Pacific, 6°36.5'S, 152°29'E (stomach contents).

Author

Bray, D.J. 2019

Resources

Atlas of Living Australia

Pacific Squaretail, Tetragonurus pacificus Abe 1953

References


Abe, T. 1953. New, rare or uncommon fishes from Japanese waters. II. Records of rare fishes of the families Diretmidae, Luvaridae and Tetragonuridae, with an appendix (description of a new species, Tetragonurus pacificus, from off the Solomon Islands). Japanese Journal of Ichthyology 3(1): 39-47 

Ahlstrom, E.H., Butler, J.L. & Sumida, B.Y. 1976. Pelagic Stromateoid fishes (Pisces, Perciformes) of the eastern Pacific: kinds, distributions, and early life histories and observations on five of these from the northwest Atlantic. Bulletin of Marine Science 26 (3): 285–402.

Haedrich, R.L. 1967. The stromateoid fishes: systematics and a classification. Bulletin of the Museum of Comparative Zoology 135(2): 31–139. See ref at BHL

Koeda, K. & Teramura, A. 2019 Redescription of Tetragonurus pacificus(Teleostei: Stromateoidei: Tetragonuridae), based on specimens collected from Taiwan and Tarawa Atoll. Zootaxa 4702(1): 026–031 https://doi.org/10.11646/zootaxa.4702.1.7, open access

Last, P.R. 2001. Nomeidae, Ariommatidae, Tetragonuridae. pp. 3771-3785 in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 6 pp. 3381-4218. 

Munro, I.S.R. 1967. The Fishes of New Guinea. Port Moresby : Dept. Agric. Stock Fish. 651 pp. 23 figs 84 pls. 

Parin, N.V. & Piotrovsky, A.S. 2004. Stromateoid fishes (suborder Stromateoidei) of the Indian Ocean (species composition, distribution, biology, and fisheries). Journal of Ichthyology 44(Suppl. 1): 33-62

Quick Facts


CAAB Code:37449002

Species Maps

CAAB distribution map