Scombrids (Tunas)


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Tunas, mackerels, Spanish mackerels, albacore, bonitos, seerfishes and wahoo are the common names for the members of the Scombridae family. The family members are distinguished by having finlets behind dorsal and anal fins, deeply forked caudal fin, and at least 2 small keels on each side of caudal peduncle. Many species have a larger keel in between the small keels.

Members of the Scombridae are found in the tropical and subtropical seas around the world. There are 15 genera and 54 species worldwide. All of them are excellent food fishes. Many are of commercial importance and good sports fishes. Scientifically the family is divided into 2 subfamilies. The subfamily Scombrinae consist of 53 species and Gasterochismatinae consist of only one species. However, in general they can be divided according to their shape into 3 groups; Spanish mackerels, mackerels and tunas.

Tunas are streamlined fishes, stout in the middle and then tapering to points at both ends. They are known fast swimmer and mostly found near the surface of coastal waters. They frequently occur in small schools and most of them are migratory fishes following a yearly cycle. They are carnivorous, feeding commonly on other schooling fishes, crustaceans and squids.


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Scientific Name: Auxis rochei  (Risso, 1810)
English Name: Bullet Tuna, Long Corseletted Frigate Mackerel
Mandarin Name: 圆花鲣 (Yuán huā jiān), 柴鱼 (Chái yú), 金鎗魚 (Jīnqiāngyú), 鲔鱼 (Wěi yú)
Local Malay Name: Ikan Tongkol, Kayu, Bakulan, Aya Peluru
Local Hokkien: Cha Hu
Main Diagnostic Features: Corselet under second dorsal-fin origin more than 6 scales wide. Scaleless area with pattern of 15 or more fairly broad, nearly vertical dark bars.
Size: Maximum fork length 40.0 cm, commonly to 35 cm.





Scientific Name: Euthynnus affinis  (Cantor, 1849)
English Name: Easten Little Tuna, Kawakawa
Mandarin Name: 巴鲣 (Bā jiān), 柴鱼 (Chái yú), 金鎗魚 (Jīnqiāngyú), 鲔鱼 (Wěi yú)
Local Malay Name: Ikan Tongkol, Kayu, Bakulan, Aya Kurik
Local Hokkien: Cha Hu
Main Diagnostic Features: Posterior portion of the back with a pattern of broken oblique stripes. 2 flaps (interpelvic process) between pelvic fins (not shown). Several characteristic dark spots between pelvic and pectoral fins which may not always be present.
Size: Maximum fork length 100.0 cm, commonly to 60.0 cm.