A monotypic genus that is circumglobal in Southern Hemisphere waters. Body elongate, robust; caudal peduncle with prominent lateral keel and smaller keel above and below on base of tail; mouth extending to below anterior half of eye; jaw teeth small, conical, 40–55 on side, fine teeth on palatines; modified elongate corselet of scales from pectoral-fin region along back to posterior end of 2nd dorsal fin, small scales behind and above lateral line, absent below; dorsal fins close together, 1st dorsal base about 3 times length of 2nd; 2nd dorsal and anal fins tall, pointed, almost opposite; caudal fin lunate; pectoral and ventral fins short, pointed; interpelvic process short and bifid.
Author: Martin F. Gomon
Cite this page as:
Martin F. Gomon, Allothunnus in Fishes of Australia, accessed 21 May 2019, http://fishesofaustralia.net.au/home/genus/46
Gomon, M.F. 2008. Families Sphyraenidae to Centrolophidae. pp. 774-800 in Gomon, M.F., Bray, D.J. & Kuiter, R.H. (eds) Fishes of Australia's Southern Coast. Sydney : Reed New Holland 928 pp.