Longfin Threadtail Anthias, Tosana longipinnis Gill, Pogonoski, Johnson & Tea 2021


A paratype of the of the Longfin Threadtail Anthias, Tosana longipinnis, AMS I.33445-001, 87.7 mm SL, paratype, from off Newcastle, New South Wales, Australia. Source: K.J. Graham, Fig. 6B, in Gill et al. 2021, Zootaxa 4996(1): 49-82. License: All rights reserved

Summary:
A tan anthias becoming pink to silvery-pink on the sides and whitish below, with a pinkish-brown to tan head grading to pale pinkish to greenish-grey below, sometimes with pink or yellow markings on the head that may extend onto the body.

Cite this page as:
Bray, D.J. 2023, Tosana longipinnis in Fishes of Australia, accessed 29 Mar 2024, https://fishesofaustralia.net.au/Home/species/5206

Longfin Threadtail Anthias, Tosana longipinnis Gill, Pogonoski, Johnson & Tea 2021

More Info


Distribution

Eastern Australia in the western Coral and Tasman Seas, from about 18– 33°S..

Features

Dorsal fin X,13-14; Anal fin III,7; Pelvic fin I,5; Pectoral fin 15-17; Caudal fin (total rays) 32-37 - principal rays 9+8, branched rays 6-7 + 6, upper procurrent rays 8-10, lower procurrent rays 7-10; Lateral-line scales 33-41; scales above lateral line to origin of dorsal fin 4-6) scales above lateral line to base of fifth dorsal spine 2-4; scales below lateral line to origin of anal fin 14-17; circumpeduncular scales 21-26; gill rakers 8-11 + 22-26 = 32-37; branchiostegal rays 7; pseudobranch filaments 15-20).

Colour

Freshly collected: head pinkish brown to tan dorsally, pale pinkish to greenish grey ventrally, sometimes with pink or yellow markings (narrow pink stripe from tip of upper lip to anterior edge of eye; broader yellow stripe beneath pink stripe, extending from upper lip to lower anterior edge of eye; broad yellow stripe from behind upper edge of eye at about 2 o’clock position to posterior edge of opercle, narrowly edged dorsally with pink; short yellow stripe from preopercle to posterior edge of operculum, at about level with ventral edge of eye, the area between yellow stripes on operculum silvery pink to pink; anterior part of lower jaw pinkish grey); iris pale yellow, narrowly dark grey dorsally and ventrally, with bluish grey crescent anteriorly and either broad pink stripe ventrally or broad pink ring around pupil; body and caudal peduncle narrowly tan dorsally, broadly pink to silvery pink mid-laterally, becoming tan on lower part of caudal peduncle and area immediately above anal-fin base, and bluish or greenish white to bright white on breast and lower abdomen; scales within upper tan region and upper part of pink region each with brown to orange crescent; pink area on body with greyish purple chevrons following myosepta; yellow stripes on head sometimes extending on to body; spinous part of dorsal fin pale pink to bright pink, yellow distally, with pale pink to yellow spot behind base of each spine, and additional spot on middle of inter-radial membrane behind fourth spine; soft part of dorsal fin similar, with four (anteriorly) to six (posteriorly) columns of yellow spots along each inter-radial membrane; anal fin pinkish hyaline, with faint yellow submarginal oblique stripe along anterior part of fin; caudal fin yellow, sometimes with submarginal pale pink to red stripe extending along each lobe of fin, and distal tips of central few rays sometimes with purple-pink spot; pelvic and pectoral fins yellowish to whitish hyaline (Gill et al. 2021).

Biology

A protogynous hermaphrodite.

Remarks

Previously this species was incorrectly recorded in Australia as Tosana niwae, which is known to ocur in the northern Hemisphere, from southern China to Japan.

Similar Species

Differs from other species of Tosana in having relatively long pectoral fins (28.9– 35.3% SL), along with the combination of relatively high numbers of lateral-line scales (33–41, usually 37–40), and relatively long anal-fin rays (longest ray 23.8–52.2% SL).

Etymology

The species is named longipinnis in reference to 'the characteristic long pectoral fins of the species'.

Species Citation

Tosana longipinnis Gill, Pogonoski, Johnson & Tea 2021, Zootaxa 4996(1): 63, figs 6-8. Type locality:  Queensland, Swains Reefs, from 22°17.27′S, 153°17.70′E to 22°11.11′S, 153°13.47′E, 190–192 m.

Author

Bray, D.J. 2023

Resources

Atlas of Living Australia

Longfin Threadtail Anthias, Tosana longipinnis Gill, Pogonoski, Johnson & Tea 2021

References


Gill, A.C., Pogonoski, J.J., Johnson, J.J. & Tea, Y.K. 2021. Three new species of Australian anthiadine fishes, with comments on the monophyly of Pseudanthias Bleeker (Teleostei: Serranidae). Zootaxa 4996(1): 49–82 https://doi.org/10.11646/zootaxa.4996.1.2

Kuiter, R.H. 2004. Basslets, hamlets and their Relatives. A comprehensive guide to selected Serranidae and Plesiopidae. TMC Publishing, Chorleywood, 216 pp. (in part as Tosana niwae; image is T. longipinnis paratype AMS I.33445-001)

Last, P.R., Pogonoski, J.J., Gledhill, D.C. White, W.T. & Walker, C.J. 2014. The deepwater demersal ichthyofauna of the western Coral Sea. Zootaxa 3887(2): 191-224 https://doi.org/10.11646/zootaxa.3887.2.4 (as Tosana cf. niwae)

Quick Facts


CAAB Code:37311229

Depth:62-228 m

Habitat:Reef associated

Max Size:9 cm SL

Native:Endemic

Species Image Gallery

Species Maps

CAAB distribution map