Tylosurus annulatus   (Valenciennes)  1846 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 100 cm.

Color: Brownish above, sivlery below. Lower lip, which is produced in to flaplike organ in young specimens, dark brown. Fins yellowish, more or less blackish in their distal part, hinderhalf of dorsal almost completely so. Middle caudal rays blackish.

Moderately compressed, the breadth of the body going 1.2-1.4 in the height. Free portion of the tail more or less tetrahedral, higher than broad. Height 15-17, 16-20 in length with caudal. Head 3.1-3.3, 3.5-3.7 in length with caudal. Eye 2.1-2.5 in postorbital part of head, 1-1.3 in interorbital space and 5.5 to nearly 7 in snout. Height of mandible below pupil about equal to half (greatest) diameter of eye. Upper surface of head flat with very broad shallow median groove. A narrow stripe in the middle, widening anteriorly to an oblong patch, is scaly. Sides of groove with deep furrows and well developed ridges. Supraorbital region with very numerous feeble striae, but so feebly developed that the bone is almost smooth on touch. Maxillary nearly entirely hidden by praeorbital, when the mouth is closed. Operculum not scaly. Canines well developed, subulate, curved forwards. Tongue covered with granular teeth. Pectorals equal to or somewhat longer than postorbital part of head, ventrals a little shorter than pectorals. Base of ventrals about midway between front of eye and base of caudal. Middle dorsal rays the shortest, those of the hinderhalf prolonged, although not so long as the first ray. First anal ray longer than first dorsal ray. Middle and hinder anal rays subequal in length, much shorter than the anterior ones. Origin of dorsal above second undivided, or above first divided ray of anal, 23 ro 24 scales between origin of dorsal and lateral line. Lateral line forming a more or less elevated dark brown keel on the caudal peduncle. Caudal forked, less so in young specimens.

Synonym (s)
Belone annulata Cuvier and Valenciennes 1846
Belone gigantea Temminck and Schlegel 1847
Belone melanurus Bleeker 1849
Belone timucoides Bleeker 1849
Belone annulata Cantor 1850
Belone cylindrica Bleeker 1852
Belone gigantea Bleeker 1858
Mastacembelus giganteus Bleeker 1863
Belone cylindrica Kner 1867
Mastacembelus choram Bleeker 1866
Mastacembelus annulatus Bleeker 1866
Belone annulata Gunther 1872
Mastacembelus annulatus Bleeker 1872
Belone annulata Day 1888
Tylosurus giganteus Jordan and Starks 1903
Tylosurus giganteus Jordan and Evermann 1905
Belone gigantea Gunther 1909

Common Name (s)
Economic Importance and Threats



• INDIA (Record: 1922)

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Weber, M; Beaufort, LF (1922) The fishes of the Indo-Australian Archipelago Print times, Pataudi house, Daryaganj, New Delhi 4 410 pp Available at - NIO, Goa

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