Thunnus thynnus orientalis   (Temminck & Schlegel)  1844 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 200-300 cm

Color: Back bluish black, the abdomen silvery with a faint pattern of paler lines alternating with rows of dots. Spinous dorsal fin gray, soft dorsal fin blue black, tips yellowish, finlets yellowish; pelvic fins dusky; caudal keel yellowish, occasionally dark.

Body robust and fusiform; eyes small. Gill rakers 34 to 43 on first arch. Two dorsal fins, separated by a narrow interspace; first dorsal fin with 13 or 14 spines and second fin with 14 to 16 soft rays, followed by 8 or 9 finlets; origin of second dorsal fin nearer to posterior end of caudal keel than to hind edge of orbit. Anal fin with 13 or 14 soft rays, followed by 7 or 8 finlets. Pectoral fins short, not reaching the interspace between dorsal fins, less than 80% of head length. Caudal peduncle with a strong lateral keel between two smaller keels. Liver densely striated on ventral surface, its three lobes subequal in length; gasbladder present.

Synonym (s)
Thynnus orientalis Temminck & Schlegel 1844
Thunnus thynus orientalis Jones and Silas 1961

Common Name (s)
• Oriental Bluefin Tuna (English)
• Choora (Malayalam)
Economic Importance and Threats
Importance:  Commercial



• INDIA (Record: 1984)

Literature Source(s)
  • Talwar, PK and Kacker, RK (1984) Commercial sea fishes of India ZSI, Calcutta 997 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

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