Cyclothone signata   Garman,  1899 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Welter-Schultes, F.

Size: 4.5 cm

Color: Whitish with black markings on cheek and back. A pair of elongate spots on the occiput, diverging from the nape toward the eyes. A series of spots in the middle of the tail. Two transverse streaks at the caudal. Short oblique streaks between the base of the dorsal and anal rays.

Lower jaw prominent with a ventrally directed spine at the symphysis. Front flat, laterally with 3 short blunt tubercles. Origin of dorsal and anal opposite, before beginning of last 1/3 of length. Ventrals before middle, extending on anal. Pectorals nearly reaching to ventrals. Anus before middle of body, slightly behind ventrals. Intermaxillary with 6-7 nearly equal, short teeth. Maxillary with a row of 15-16 teeth of the anterior 1/3 of the row looking vertically downward, the remaining increasing in size posteriorly, slightly directed forward. Mandible with 62-66 teeth, in the anterior 1/7 2 larger canines, seperated by smaller teeth, the teeth behind gradually increasing in size posteriorly. Vomer edentulous. Palatines with 3-4, pterygoids with 2-3 teeth. No scales. Luminous organs, a small, black suborbital, two operculars, the dorsal one below the level of the eye, the ventral one on the level of the lower base of the pectorals, 9-10 between the branchiostegals. On each side of the body 13 in a ventral series between isthmus and ventrals, 4 between ventrals and anal of which the 2 anterior ones are approximated, the second above the anus. 13 between origin of anal and caudal. 7 in a lateral series between operculum and vertical through ventrals, the first of which higher up, outside the series.

Dioecious, external fertilization, nonguarders, oviparous with planktonic eggs and larvae.

Remarks: Values in above description denote proportions.

Synonym (s)
Cyclothone signata Brauer, 1906
Cyclothone signata Zugmayer, 1911
Cyclothone signata Max Weber, 1913

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic
Trophic Level:  Secondary Consumer
Prey:  Planktonic copepods


• Bay of Bengal (Lat: 15) (Long: 90) INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep, Minicoy Island (Lat: 8.11) (Long: 73.3) INDIA

Literature Source(s)
  • Wafar, MVM (2003) Checklists of reef fauna Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Weber, M; Beaufort, LF (1965) The fishes of the Indo-Australian Archipelago E.J. Brill, Leiden, Holland 2 404 pp Available at - NIO, Goa
  • Jones, S and Kumaran, M (1980) Fishes of the Laccadive Archipelago The Nature Conservation and Aquatic Sciences Service, Trivandrum, Kerala 760 pp Available at - NIO, Goa
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at -
  • Jones, S and Kumaran, M (1959) The fishing industry of Minicoy Island with special reference to the tuna fishery Indian Journal of Fisheries Indian Council of Agricultural Research 6 (1) 30-57 Available at -

Page last updated on:2011-06-01

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