Thunnus tonggol (Bleeker, 1851)
- Dataset
- The National Checklist of Taiwan (Catalogue of Life in Taiwan, TaiCoL)
Classification
- kingdom
- Animalia
- phylum
- Chordata
- class
- Actinopterygii
- order
- Perciformes
- family
- Scombridae
- genus
- Thunnus
diagnostic
Body fusiform, elongate, and slightly compressed. Teeth small and conical, in a single series. Gill rakers 27 to 34 on first gill arch. Two dorsal fins, separated only by a narrow interspace, second dorsal fin higher than the first dorsal fin, the first with XII to XIV spines; second dorsal fin with 14 to 15 rays followed by 8 to 9 finlets; anal fin with 13 to 14 rays followed by 8 to 9 finlets; pectoral fins short to moderately long; interpelvic process small and bifid. Body with very small scales; corselet of larger scales developed but not very distinct. Caudal peduncle very slender, bearing on each side a strong lateral keel between 2 smaller keels. Swimbladder absent or rudimentary. Lower sides and belly silvery white with colorless elongate oval spots arranged in horizontally oriented rows. The dorsal, pectoral and pelvic fins blackish; the tip of the second dorsal and anal fins washed with yellow; the anal fin silvery; the dorsal and anal finlets yellow with grayish margins; the caudal fin blackish, with streaks of yellow green.
distribution
Widespread in the Indo-West Pacific from Red Sea and East Africa to New Guinea, north to Japan south to Australia. It is a common species in Taiwan, especially in eastern and southern part.