Cottogobius bilobatus [Status Unaccepted]   Koumans,  1941 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 27mm.

Color: In preserved specimens brownish. On head 3 faint darker bands, radiating from eye,one on snout, extending on upper lip, where it meets the band of the other side, one to end of maxillary, one on cheek. Body wholly with minute dark spots. First dorsal fin with a few dark spots. Second dorsal fin with more spots, forming at the last ray a black irregular blotch. Middle of caudal fin dark. Anal fin diaphanous. Pectoral fin diaphanous, base with many minute spots. Ventral fin diaphanous.

Body elongated, anteriorly cylindrical, posteriorly compressed, height (4 1/2) 6 in length, 7 in total length. Head depressed (to subcylindrical), (3) 3 1/4 in length, 3 3/4 in total length. Eye (3 1/2) 4 in head, interorbital 1/5 eye diameter. Snout pointed, (as long as eye) 1 1/2 eye diameter, tip before lower part of eye. Anterior nostril tubular. Mouth a little oblique, upper jaw prominent (jaws subequal). Maxillary extends to below anterior margin of pupil. Lips thick. Teeth in upper jaw in many rows of small teeth, outer row enlarged, canines. In lower jaw teeth in many rows, outer row enlarged, inner row laterally enlarged to curved canines, on each side of symphysis of lower jaw 1-2 strong, curved canines. Tongue bilobate. Two to three longitudinal mucous canals on cheek. Some open pores round the upper half of eye and along posterior margin of preopercle. Gillopenings far continued forward below, gill membranes united in front across the isthmus. No fleshy flaps on inner edge of should ergirdle. Head, nape and breast naked(Head scaled above behind eye with ctenoid scales). Scales of body ctenoid. Dorsal fins separate. First dorsal fin lower than body, middle rays are the longest. Caudal fin obtuse, much shorter than head. Pectoral fin broad, 1/2 of head, without free silk like rays, lowermost rays are unbranched and a little bent outward. Ventral fin short, as long as postorbital part of head, united, about circular, the outer margin is fringed as the rays extend a little beyond the membrane, basal membrane well developed, laterally with a rounded lobe (lobe bilobate).

Remarks: Values in above description denote proportions.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Andaman and Nicobar Islands, Nicobar INDIA
• Andaman and Nicobar Islands INDIA

Literature Source(s)
  • Rao, DV; Devi, K and Rajan, PT (2000) An account of ichthyofauna of Andaman and Nicobar Islands, Bay of Bengal Occasional paper no 178 Records of the Zoological Survey of India ZSI, Calcutta 1-434 Available at - NCL, Pune
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • Larson, HK and Hoese, DF (1980) Fische des Indischen Ozeans. Ergebnisse der ichthyologischen Untersuchungen wahrend der Expedition des Forschungsschiffes 'Meteor' in den Indischen Ozean, Oktober 1964 bis Mai 1965. A. Systematischer Teil, 23: Gobiidae Meteor Forschungsergebnisse Reihe D - Biologie 32 33-43 Available at - ZOOR11700048647
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Koumans, FP (1953) The fishes of the Indo-Australian Archipelago A. J. Reprints agency, Karol Bagh, New Delhi 10 423 pp Available at - NIO, Goa
  • Talwar, PK (1990) Fishes of Andaman and Nicobar Islands: A synoptic survey Journal of the Andaman Science Association Andaman Science Association, Port Blair 6(2) 71-102 Available at - NIO,Goa

Page last updated on:2011-08-23

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