Thalassoma lunare   (Linnaeus,  1758) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Mya Than Tun

Size: 25-30 cm.

Color: Bright green to blue with a vertical red line occurring on each scale. Irregular curved red or purple bands, running horizontally occur on the head. The dorsal and anal fins are green to blue basally with pink, blue and yellow stripes. The caudal fin is green to blue basally. A large hemispherical yellow area occurs posteriorly on the caudal fin.

Body shape elongate. Height 3.1-3.6, 4.4-4.5 in length with caudal. Head 3.4-3.6, 4.2-4.5 in length with caudal. Height of head 1.3 in its length. Eye 5.8-6, more than twice in snout and 1.5 in convex inter orbital space. Mouth slightly ascending, protractile, small, not reaching to vertical through anterior nostril. Lips rather thick, plated, the most interior plate festooned. Teeth in a single series in both jaws, those of the upper jaw curved, the two anterior ones canines. In the lower jaw the teeth gradually increase in size anteriorly, the two anterior ones moderate canines. Head naked, with exception of a few small scales in the supra-opercular region. Seven or eight scales before dorsal. Dorsal spines slender, stiff, the first equal to diameter of eye, the last one less than diameter of pupil longer. Membranes between the spines scarcely incised. Soft dorsal slightly higher than spinous part, pointed behind. Origin of anal below last dorsal spine. First anal spine minute, third slightly longer than second spine, which is as long as diameter of eye. Soft anal similar to soft dorsal. Vertical fins with a low scaly sheath. Pectorals with the top rounded, the hind margin nearly straight, slightly more than head without snout. Ventrals with the first ray prolonged, shorter than pectorals. Caudal semilunar, the outer rays much longer than the middle ones and prolonged into a filaments in large specimens. Adults are identified by the yellow lunate tail. Large males turn blue on the head that grades to green towards the tail. Adults with large yellow crescent posteriorly in caudal fin and blue pectoral fins with a large elongate pink area distally. Juveniles with a large dark spot in middle of dorsal fin and a large diffuse black spot at base of caudal fin. Dorsal spines (total): 8 - 8, Dorsal soft rays (total): 13 - 13, Anal spines: 3, Anal soft rays: 11.

Protogynous, external fertilization. A diandric species. Length at sex change = 11.0 cm TL, forms leks during breeding.

Remarks: Values in above description denote proportions.

Synonym (s)
Julis gracilis Steindachner, 1863
Thalassoma lunare Jordan and Seale, 1906
Thalassoma lunaris Evermann and Seale, 1907
Labrus lunaris Linnaeus, 1858
Labrus lunaris Linnaeus, 1758
(Senior synonym)
Scarus gallus Forsskal, 1775
Julis porphyrocephalus Bennett, 1832
Julis lunaris Ruppell, 1835
Julis lunaris Cuvier and Valenciennes, 1839
Julis lunaris Bleeker, 1849
Julis (Julis) celebicus Bleeker, 1855
Julis lunaris Bleeker, 1862
Julis lunaris Gunther, 1862
Julis lunaris Kner, 1865
Julis lunaris Steindachner, 1866
Julis lunaris Klunzinger, 1871
Julis lunaris Day, 1877
Thalassoma lunare Fowler, 1904
Julis lunaris Gilchrist and Thompson, 1908
Julis lunaris Gunther, 1909
Thalassoma lunare Kendall and Goldsborough, 1911
Thalassoma lunare Barnard, 1927
Julis lunaris Vinciguerra, 1926
Thalassoma lunaris Marshall, 1928
Julis lunaris Ahl, 1928
Thalassoma lunare Fowler and Bean, 1928
Thalassoma lunare Fowler, 1928
Thalassoma lunare P. J. Schmidt, 1930
Thalassoma lunare Herre, 1936
Julis lunaris Day, 1878
Thalassoma lunare de Beaufort, 1940
Thallasoma lunare (Linnaeus, 1758)

Common Name (s)
• Crescent Wrasse (English)
• Moon Wrasse (English)
• Nagudiguhikkae (Mahl)
• Chulam (Malayalam)
• Nihola (Malayalam)
• Green Wrasse (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries, marketed fresh or frozen, aquarium, Ornamental fish)

Habitat:  Reef Associated, Demersal, Coastal
Trophic Level:  Secondary Consumer
Prey:  Zoobenthos and fish eggs
Predator:  Plectropomus leopardus, Synodus englemani


• Andaman and Nicobar Islands, Andaman Islands (Lat: 12.5) (Long: 92.75) INDIA
• Andaman and Nicobar Islands, Andaman Islands (Lat: 10) (Long: 93) INDIA
• Lakshadweep, Kavaratti Atoll (Lat: 10.55) (Long: 72.63) INDIA (Record: 01/1991-06/1992)
• Tamil Nadu, Chennai INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Lakshadweep, Amini INDIA
• Lakshadweep, Kadamatt INDIA
• Lakshadweep, Kavaratti INDIA
• Lakshadweep, Kilttan INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep, Pitti INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands, Great Nicobar Island INDIA (Record: 08/2000-07/2003)
• Tamil Nadu, Tuticorin Coast INDIA
• Andaman and Nicobar Islands, North Reef Island INDIA
• Lakshadweep, Amini Island (Lat: 11.08) (Long: 72.75) INDIA (Record: 03/1954)
• Palk Bay INDIA
• Lakshadweep Islands INDIA (Record: 11/1993-01/1997)
• Karnataka, Netrani Island INDIA
• Tamil Nadu, Kilakarai INDIA
• Tamil Nadu, Cuddalore Coast INDIA (Record: 07/2008)
• Andaman and Nicobar Islands INDIA

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Page last updated on:2011-12-09

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