Leiognathus blochi   (Valenciennes,  1835) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Actinopterygii
Order:Perciformes
Family:Leiognathidae

Description
Color: Silvery, with a dark brown blotch over the nape, and a mark in the upper half of the spinous dorsal fin from the third to the sixth spines. Vertical zig-zag yellow line on the back and sides, which fade soon after death, base of pectorals posteriorly dark colored.

Length of head 4 1/3, of caudal 4 3/4 to 5, height of body 2 3/4 to 3 1/4 in the total length. Eyes - diameter 1/3 length of head, 1 diameter from end of snout, from 3/4 to 1 apart. Dorsal profile rather more convex than that of the abdomen, a slight concavity over the occiput, the snout is rather pointed and not truncated. Upper surface of orbital serrated, which serrations appear to become obsolete in some old specimens, a pair of small spines at its anterior-superior angle, the distance between the outer edges of the supra orbital spines equals 2/5 of the length of the head. The posterior margin of the maxilla reaches to below the first third or middle of the eye. Lower edge of preopercle strongly serrated. Cavity on upper surface of head at least twice as long as wide. Teeth in a single row in the jaws. Fins dorsal spine of moderate strength, the second rather the longest, and equal or nearly equal, to 1/2 the height of the body, the third and fourth serrated anteriorly in their lower halves. Pectoral as long as the head excluding in their lower halves. Pectorals as long as the head excluding the snout. Ventrals reaches to the anal. Second anal spine 2 1/4 in the height of the body, the third finely serrated anteriorly. Scales on body (except base of pectoral fin), breast, and chest. a rather large one at base of ventral. Lateral line in about 60 tubes, situated on rounded scales.

Remarks: Values in above description denote proportions.


Synonym (s)
Equula blochii Cuvier and Valenciennes, 1835
Zeus notatus Bloch, 1853
Equula blochii Bleeker, 1853
Equula blochii Day, 1888
Leiognathus (Eubleekeria) spilotus Fowler, 1904
Leiognathus blochii Seale, 1910
Leiognathus blochii Chaudhuri, 1923

Common Name (s)
• Two-blotch Ponyfish
Economic Importance and Threats

Ecology
Prey:  copepods, small penaeids and Evadne, Polychaetes, diatoms like Coscinodiscus and Fragilaria

Biogeography


• Tamil Nadu, Chennai INDIA
• West Bengal, Calcutta INDIA
• Orissa, Chilika Lake INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Kerala, Off Calicut INDIA (Record: 1948-1953) (Depth: 3.65-14.63 mts)
• INDIA

Literature Source(s)
  • Weber, M; Beaufort, LF (1931) The fishes of the Indo-Australian Archipelago Print times, Pataudi house, Daryaganj, New Delhi 6 448 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Venkataraman, G (1960) Studies on the food and feeding relationships of the inshore fishes off Calicut on the Malabar coast Indian Journal of Fisheries Indian Council of Agricultural Research 7 (2) 275-306 Available at - http://eprints.cmfri.org.in/1898/1/Article_03.pdf
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at - eprints.cmfri.org.in/3975/1/Special_Publication_No_12_Revised.pdf

Page last updated on:2011-10-20

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