Thalassoma fuscum   (Lacepede)  1801 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 24 cm.

Color: In preserved specimen purplish violet above, lighter below. Two longitudinal series of large rectangular blotches, one from upper part of opercle to base of upper caudal rays, the second from opercular flap, above pectorals, to sub median caudal rays. These blotches are bordered by a narrow dark line, followed by a light bluish area, the inter-spaces between the blotches of the same bluish color. The blotches are of a brownish color. Head purple, lighter below, darker on anterior part of preopercle and towards posterior part of opercle, which has a light hind border. Dorsal with a dusky median band, darkened to a blackish patch between the first to third spines. Anal yellowish red distally, light violet basally, the two colors separated by a narrow longitudinal dark stripe. Caudal yellowish, with indistinct brownish purple longitudinal bands. Pectorals with a dark blue axil spot, brownish along their upper and distal part, the rest of the fin yellowish. Ventrals yellowish.

Height 3.3, 4 in length with caudal. Head 3.4, 4.1 in length with caudal. Height of head 1.1 in its length. Eye 5.6, 1.8 in snout and 1.4 in convex inter orbital space. Mouth slightly oblique, not reaching to below anterior nostril. Lips thick, plated, at least the upper one. Teeth in a single series, the two anterior ones in both jaws moderate canines. Head naked, with exception of 3 small scales on upper part of opercle. about 9 scales in front of dorsal. Dorsal spines short and slender. First spine somewhat more than eye, last one twice diameter of eye. Soft dorsal higher than spinous part, somewhat pointed behind. Origin of anal below first soft ray of dorsal. First anal spine minute, last longest, about as long as longest dorsal spine. Soft anal similar to soft dorsal. Pectorals half length of snout shorter than head. Ventrals without produced rays, moderately pointed, as long as post orbital part of head. Caudal truncate, but the lobes slightly produced.

Remarks: Values in above description denote proportions.

Synonym (s)
Labrus fuscus Lacepede 1802
Labrus trilobatus Lacepede
Julis bicantenatus Bennett 1831
Julis trilobatus Cuvier and Valenciennes 1839
Julis formosus Cuvier and Valenciennes
Julis quadricolor Bleeker 1862
Julis trilobata Gunther 1862
Thalassoma fuscum Jordan and Evermann 1905
Thalassoma fuscum Jordan and Seale 1906
Julis trilobata Gilchrist and Thompson 1908
Julis fusca Gunther 1909
Julis purpurea M. Weber 1913
Thalassoma fuscum Jordan and Jordan 1925
Thalassoma trilobata Fowler 1931
Thalassoma fuscum P. J. Schmidt 1930

Common Name (s)
Economic Importance and Threats



• INDIA (Record: 1940)

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Beaufort, LF (1940) The fishes of the Indo-Australian Archipelago A. J. Reprints agency, Karol Bagh, New Delhi 8 508 pp Available at - NIO, Goa

Page last updated on:2009-11-05

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