Euthynnus affinis   (Cantor,  1849) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Actinopterygii
Order:Perciformes
Family:Scombridae

Image copyrights: Randall, J.E.

Description
Size: 50 - 100 cm.

Max. weight reported: 14.0 kg

Color: Back of the fish is dark blue to irridescent green and patterned with wavy stripes which do not extend forward beyond the middle of the first dorsal fin.The lower sides and the belly are silvery white. Several characteristic black spots, as many as 11, may occur between the pelvic and pectoral fins

Head 3.4-3.7 in standard length, 3.8-4.1 in total length. Depth of body 3.8-4.2 in standard length, 4.2-4.7 in total length. Eye diameter 5.6-6.5 in head, 1.6-1.8 in snout and 1.8-2.2 in convex interorbital space. Maxillary reaching almost to below middle of eye. Teeth curved, conical, in a single series in jaws. A single row of teeth on vomer and palatines. First dorsal spine as long as postorbital length of head, spines becoming shorter posteriorly, the last one shorter than half eye diameter. Height of second dorsal much shorter than snout. Anal fin inserted opposite last ray of soft dorsal or slightly behind, its height almost equal to that of soft dorsal. Pectoral fin as long as postorbital length of head. Ventral fin equal to snout and eye. Keel on caudal peduncle moderately developed. Corselet well developed with two deep emarginations; scales above pectoral larger than those below pectoral. Swim bladder absent. No trace of vertebral protuberances.
Number of spines in the first dorsal fin: XIV-XV; number of spines and rays in the second dorsal fin: 13-14+8-9; number of spines and rays in the anal fin: 13-14+7-8; number of rays in the pectoral fin: 26-27; number of spines and rays in the ventral fin: I, 5; gill raker count: 8-10+22-25.

Dioecious, external fertilization, nonguarders, open water/substratum egg scatterers. Oviparous

Remarks: Values in above description denote proportions.


Synonym (s)
Thynnus affinis Cantor, 1849
Thynnus affinis Cantor, 1850
Euthynnus affinis Munro, 1955
Euthynnus affinis affinis Jones and Silas, 1960
Euthynnus alleteratus Smith, 1949
Euthynnus alletteratus affinis de Beaufort, 1951
Thunnus thunnina Day, 1878
Euthunnus affinis affinis (Cantor, 1849)
(Senior synonym)
Euthunnus affinis yaito Kishinouye, 1915
(Junior synonym)
Euthunnus alleteratus affinis (Cantor, 1849)
(Senior synonym)
Euthunnus wallisi (Whitley, 1937)
(Junior synonym)
Euthynnus affinis yaito Kishinouye, 1915
(Junior synonym)
Euthynnus alletteratus (non Rafinesque, 1810)
(Misapplied name)
Euthynnus alletteratus affinis (Cantor, 1849)
(Senior synonym)
Euthynnus yaito Kishinouye, 1915
(Junior synonym)
Thynnus affinis Cantor, 1849
(Senior synonym)
Wanderer wallisi Whitley, 1937
(Junior synonym)
Euthunnus yaito Kishinouye, 1915
(Misspelling)
Euthynus affinis (Cantor, 1849)
(Misspelling)
Evrythynnus affinis (Cantor, 1849)
(Misspelling)

Common Name (s)
• Mackerel Tuna (English)
• Kawakawa (English)
• Eastern Little Tuna (English)
• Little Tuna (English)
• Gedar (Gujarati)
• Bokado (Konkani)
• Latti (Mahl)
• Lattichoora (Mahl)
• Choora (Malayalam)
• Bugudi (Marathi)
• Chuki (Marathi)
• Gedar (Marathi)
• Kuppa (Marathi)
• Ohaman (Marathi)
• Choorimin (Tamil)
• Suraly (Tamil)
• Soora (Telugu)
• Choorai
• Tuna (English)
Economic Importance and Threats
Importance:  Commercial, Dangers
(Fisheries; marketed fresh or frozen, dried and salted, and canned; gamefish.
Reported to cause ciguatera poisoning.)

Ecology
Habitat:  Pelagic, Open Sea, Coastal
Trophic Level:  Secondary Consumer
Prey:  Small fishes, especially on clupeoids and atherinids, also on squids, crustaceans and zooplankton
Predator:  Billfishes, Thunnus albacares, Carcharhinus sorrah

Biogeography


• Andaman and Nicobar Islands, Andaman Islands (Lat: 10) (Long: 93) INDIA
• Gulf of Oman
• Persian Gulf
• Andhra Pradesh, Vishakhapatnam INDIA (Record: 2004-2006) (Depth: -100 mts)
• Tamil Nadu, Tuticorin INDIA (Record: 1997-2002)
• Tamil Nadu, Chennai Coast INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep, Kavaratti INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Red Sea
• INDIA
• SRI LANKA
• MALDIVES
• Kerala, Vizhinjam INDIA
• Pondicherry INDIA
• Kerala INDIA
• Orissa, Puri INDIA (Record: 1987-2006)
• Karnataka, Karwar Coast INDIA
• Gujarat, Veraval INDIA
• Andaman and Nicobar Islands INDIA
• Andaman and Nicobar Islands (Lat: 13.75) (Long: 94.25) INDIA
• Andaman and Nicobar Islands (Lat: 6.75) (Long: 92.16) INDIA
• Goa INDIA

Literature Source(s)
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  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
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  • Dr. Kumaraguru, AK (2000) Studies on socioeconomics of Coral Reef resource users in the Gulf of Mannar coast, South India Centre for Marine and Coastal studies School of Energy, Environment and Natural Resources Madurai Kamaraj University, Madurai, India Available at - http://planningcommission.nic.in/reports/sereport/ser/stdy_coral.pdf
  • Ramani, K; Ammini, PL; Srinivasan, J; Najeemudeen, SH; Beena, MR; George, KP; Seynudeen, MB; Subbaraman, G; Anandan, K; Khambadkar, LL; Augustine, SK; Pugazhendi, D; Rudhramurthy, N; Subramani, S; Seetharaman, S; Batcha, HK and Sankaralingam, S (2010) An overview of marine fisheries in India during 2007 Marine Fisheries Information Service CMFRI, Kochi 203 1-14 Available at - NIO, Goa
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  • Biswas, KP (2009) Fishes around Indian Ocean Larger Oceanic Pelagic Fishes Daya publishing house Available at - NIO,Goa
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Page last updated on:2012-02-01

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