Siganus rostratus   (Valenciennes,  1835) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: The Nature Conservation and Aquatic Sciences Service

Size: 34.6 cm.

Color: In preserved specimens brown, sides with scattered dark brown spots. An indistinct dark brown streak along hind border of opercle. In a young specimen the lower sides of the head, body, and tail show faint longitudinal somewhat wavy broken white lines. Still young ones are distinctly silvery below. Spinous dorsal and anal clouded with brown, membranes of soft dorsal and anal hyaline, the rays ringed darker and lighter brown. Caudal brown, with indistinct dark brown transverse bands, interrupted in the muddle.

Height 2.4-2.7, 3.1-3.4 in length with caudal. Head 4.2-4.5, 5.2-5.7 in length with caudal. Eye 3.2-4.1, 1.3-1.7 in snout and 1.1-1.3 in the very slightly convex inter orbital space. Anterior nostril with a posterior flap, reaching to the posterior nostril in young ones, not so far in adults. Cheeks with some scattered scales anteriorly, otherwise naked. First dorsal spine equal to eye, seventh dorsal spine slightly longer than those anterior to it, equal to snout or one third diameter of eye longer. Spines behind the tenth rapidly diminishing in size, the last spine shorter than the first one. Soft dorsal rounded, the median rays not much longer than the anterior ones, the posterior ones gradually decreasing in size, the last half length of the longest median one, which equals length of longest spine. First anal spine longer than first dorsal one, fourth anal spine somewhat longer than the spines before it, as long as longest dorsal spine. Three last rapidly decreasing in size, the last less than eye. Lower border of anal slightly rounded, almost straight, the anterior rays subequal, squal to to eye in length, the posterior ones shorter. Pectorals equal to snout and eye or somewhat longer, ventrals shoter, as long as head without snout. Caudal deeply forked, the median rays at least half length of the outer one, Caudal peduncle slender, its last height 1.4-1.5 in eye.

Remarks: Values in above description denote proportions.

Synonym (s)
Amphacanthus argenteus Quoy and Gaimard 1824
Amphacantnus rostratus Cuvier and Valenciennes 1835
Amphacanthus argenteus Cuvier and Valenciennes
Amphacanthus kopsii Bleeker 1851
Teuthis rostrata Playfair 1866
Amphacanthus rostratus Klunzinger 1871
Teuthis rostrata Gunther 1875
Teuthis argentea Gunther
Tetuhis rostrata Klunzinger 1884
Teuthis rostrata Waite 1899
Siganus rostrata Seale 1901
Teuthis rostrata Steindachiner 1902
Amphacanthus argenteus M. Weber 1913
Teuthis rostrata Herre and Montalban 1928
Siganus rostratus Fowler 1928
Siganus argenteus Fowler
Siganus rostratus Fowler and Bean 1929
Siganus rostratus Fowler 1931
Teuthis rostrata Herre 1936
Siganus rostratus de Beaufort 1951

Common Name (s)
• Bori
• Kalloran
Economic Importance and Threats
Importance:  Commercial
(Ornamental fish)



• Lakshadweep INDIA
• Lakshadweep, Agatti INDIA
• Lakshadweep, Amini INDIA
• Lakshadweep, Bitra INDIA
• Lakshadweep, Chettalatt INDIA
• Lakshadweep, Kavaratti INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep, Suheli INDIA
• Red Sea
• Lakshadweep Islands INDIA (Record: 11/1993-01/1997)

Literature Source(s)
  • Wafar, MVM (2003) Checklists of reef fauna Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Beaufort, LF and Chapman, WM (1951) The fishes of the Indo-Australian Archipelago A. J. Reprints agency, Karol Bagh, New Delhi 9 484 pp Available at - NIO, Goa
  • Jones, S and Kumaran, M (1980) Fishes of the Laccadive Archipelago The Nature Conservation and Aquatic Sciences Service, Trivandrum, Kerala 760 pp Available at - NIO, Goa
  • Murty, VS (2002) Marine ornamental fish resources of Lakshadweep CMFRI Special Publication CMFRI 72 1-134 Available at -

Page last updated on:2011-05-12

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