Platytroctes apus   Gunther  1878 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: JAMARC

Max length : 18.0 cm SL (male/unsexed)

Color: Brownish; region below pectoral, around vent and upper and lower borders of caudal peduncle black.

Head and body much compressed and deep. Head 3.3-3.5, depth of body 2.7-2.8, both in standard length. Head longitudinally concave above bordered with a muciferous canal on each side which tapers to a point between nostrils. Eye diameter rather large, close to upper profile, about 3 in head and equal to or slightly more than snout. Lower jaw projecting beyond the upper. Mouth small, maxillary broad and reaching to vertical from anterior border of eye. Teeth minute, uniserial in jaws; vomer with minute teeth; palatines edentulous. Origin of dorsal fin in front of a vertical from that of anal fin. Vent just in front of anal fin. Caudal fin forked. Pectoral fin short, slightly shorter than half eye diameter. Ventral fins absent. Humeral arch terminating in an acute spine. Scales small, cycloid, each with a longitudinal keel. Head naked. Lateral line distinct, almost straight and running along the middle of body.
Number of spines and rays in the dorsal fin: 18; number of spines and rays in the anal fin: 17; number of rays in the pectoral fin: 20; number of scale rows along the midside of body from the upper corner of operculum to the midbase of caudal fin in the absence of lateral line: about 100.

Remarks: Values in above description denote proportions.

Synonym (s)
Platytroctes apus Gunther 1878
Platytroctes procerus Brauer 1906
(Junior synonym)

Common Name (s)
• Legless Searsid (English)
Economic Importance and Threats

Habitat:  Pelagic


• Lakshadweep Sea INDIA (Record: 1980)

Literature Source(s)
  • Wafar, MVM (2003) Checklists of reef fauna Available at -
  • Zoological Survey of India (Eds) (1991) Animal resources of India (Protozoa to Mammalia) ZSI 1-694 Available at - NCL, Pune
  • Alcock, A (1994) A descriptive catalogue of the Indian deep sea fishes in the Indian museum Oxford and IBH Publishing Co. Pvt. Ltd.,New Delhi 1-211 Available at - CMFRI Library, Cochin- 682018
  • 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
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at -

Page last updated on:2009-10-19

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