Bluelined Rabbitfish, Siganus doliatus Guérin-Méneville 1829-38


Other Names: Barred Rabbitfish, Barred Spinefoot, Blue-lined Rabbitfish, Blue-lined Rabbit-fish, Doublebar Spinefoot, Pencil-streaked Rabbitfish, Pencil-streaked Spinefoot, Two Barred Rabbitfish

Bluelined Rabbitfish, Siganus doliatus - Australia. Source: T. Cooper / Reef Life Survey. License: CC by Attribution

Summary:
A pale bluish-grey to whitish rabbitfish with two diagonal brown bands, one through the eye and a second just behind the head, fine yellow lines on the head and sides, and yellow dorsal and caudal fins.

Cite this page as:
Dianne J. Bray, Siganus doliatus in Fishes of Australia, accessed 21 Nov 2018, http://fishesofaustralia.net.au/home/species/1049

Bluelined Rabbitfish, Siganus doliatus Guérin-Méneville 1829-38

More Info


Distribution

Recorded from Ningaloo Reef, WA, to Moreton Bay, QLD, also Rowley Shoals and Scott Reef, WA, and Ashmore Reef, Timor Sea. Occurs elsewhere in the tropical West-central Pacific. Inhabits shallow reef flats near rich coral growth in lagoons and other sheltered reef habitats. Usually seen in pairs or schools grazing on turf algae, seagrass and macroalgae. 

Features

Dorsal fin XIII, 10; Anal fin VII, 9; Pectoral fin 16-17; Vertebrae 13; Scale rows above lateral line 19-26.
Spines stout, pungent and venomous. Preopercular 97°-110°. Strong scales cover cheeks. Midline of thorax fully scaled; sometimes a few scales absent from pelvic ridges.

Colour

Body blue above, silvery white below; from nape through eye to chin a seal brown band, another from base of 4th-5th dorsal spines to just below of pectoral fin. 

Feeding

Herbivore - feeds on turf algae, macroalgae and seagrass. Schools of Bluelined Rabbitfish often target the territories of herbivorous damselfishes.

Biology

Although Bluelined Rabbitfish seemingly form socially monogamous pairs, acoustic telemetry studies have shown that paired adults undertake highly synchronized migrations with many other Bluelined Rabbitfish every month. All tagged individuals migrated along the same route in three consecutive months and were absent from home territories for 2–3 days just after the new moon - suggesting that Siganus doliatus forms spawning aggregations (Fox et al. 2015). Individuals spawn in groups at dusk usually around the first quarter moon during warmer months. 
Individuals mature at about 2 years of age.

Species Citation

Siganus doliatus Guérin-Méneville 1829-38, Iconographie du Règne animal de G. Cuvier IV, Poissons 10: 22, Pl. 35 (fig. 1). Type locality: Coast of Buru Island, near New Guinea, Indonesia; Vanikoro Island, Santa Cruz Islands, southwestern Pacific.

Author

Dianne J. Bray

Bluelined Rabbitfish, Siganus doliatus Guérin-Méneville 1829-38

References


Allen, G.R. 1985. Fishes of Western Australia. Book 9. 2207-2534 526 pls in Burgess, W.E. & Axelrod, H.R. (eds). Pacific Marine Fishes. Neptune, New Jersey : T.F.H. Publications.

Allen, G.R. 1993. Fishes of Ashmore Reef and Cartier Island. Records of the Western Australian Museum, Supplement 44: 67-91.

Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls.

Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.

Allen, G.R. & Russell, B.C. 1986. Part VII Fishes. 79-103 in Berry, P.F. (ed.). Faunal Surveys of the Rowley Shoals, Scott Reef and Seringapatam Reef, northwestern Australia. Records of the Western Australian Museum, Supplement 25: 1-106.

Allen, G.R. & Swainston, R. 1988. The Marine Fishes of North-Western Australia. A field guide for anglers and divers. Perth, WA : Western Australian Museum 201 pp., 70 pls.

Bellwood, D.R. & C.J. Fulton (2008). Sediment-mediated suppression of herbivory on coral reefs: decreasing resilience to rising sea levels and climate change? Limnology and Oceanography 53: 2695-2701.

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Brandl, S.J. & D.R. Bellwood (2013). Morphology, sociality, and ecology: can morphology predict pairing behavior in coral reef fishes? Coral Reefs 32: 835-836.

Brandl, S.J., A.S. Hoey & D.R. Bellwood (2013). Micro-topography mediates interactions between corals, algae, and herbivorous fishes on coral reefs. Coral Reefs, DOI 10.1007/s00338-013-1110-5.

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Cuvier, G.L in Cuvier, G.L., Griffith, E. & Smith, C.H. 1834. The class Pisces arranged by the Baron Cuvier with supplementary additions by Griffith and Smith. in, The Animal Kingdom Arranged in Conformity with its Organisation. London : Gilbert & Rivington Vol. 10 680 pp. 64 pls.

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Fox RJ, Bellwood DR, Jennions MD. 2015 Why pair? Evidence of aggregative mating in a socially monogamous marine fish (Siganus doliatus, Siganidae). Royal Society Open Science 2: 150252. http://dx.doi.org/10.1098/rsos.150252

Fox, R.J., T.L. Sunderland, A.S. Hoey & D.R. Bellwood (2009). Estimating ecosystem function: contrasting roles of closely related herbivorous rabbitfishes (Siganidae) on coral reefs. Marine Ecology Progress Series 385: 261-260.

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Quick Facts


CAAB Code:37438009

Behaviour:2-15 m

Danger:Venomous spines

Habitat:Reef associated

Max Size:25 cm TL

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