Rhinobatos lionotus   Norman  1926 (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Elasmobranchii
Order:Rajiformes
Family:Rhinobatidae

Description
Color: Body uniform brownish gray or olive green above, whitish below.

Snout moderate and bluntly pointed, its margins scarcely concave; rostral ridges separated by considerable distance throughout their length. Eye about 3.4 times in snout length, and equal to interorbital width. Width of mouth 2.2 in preoral distance, about 2 times internarial distance. Nostrils moderate, oblique, 2 times in width of mouth; anterior nasal flap extending as far as level of inner end of nostril. Spiracles smaller than eyes. Two dorsal fins; first dorsal fin base about 2.8 times of interspace between bases of dorsal fins. Back with minute denticles, smooth to touch; a series of minute tubercles in median line of back.

Dioecious, internal (oviduct) fertilization, internal live bearers. Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialized structures.


Synonym (s)
Rhinobatis schlegeli Annandale 1909
Rhinobatos lionotus Fowler 1941
Rhinobatos lionotus Misra 1952
Rhinobatos lionotus Misra & Menon 1958
Rhinobatos lionotus Norman 1926
(Senior synonym)
Rhinobatus lionotus Norman 1926
Rhinobatus lionotus Norman 1929
Rhinobatos lionotus Misra 1969

Common Name (s)
• Normans Shovelnose Ray (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries)

Ecology
Habitat:  Demersal, Estuarine

Biogeography


• Bay of Bengal INDIA (Record: 1984)

Literature Source(s)
  • Misra, KS (1969) Fauna of India Published by the Manager Of Publications Delhi 1 276 pp
  • Talwar, PK and Kacker, RK (1984) Commercial sea fishes of India ZSI, Calcutta 997 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
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org

Page last updated on:2009-12-22

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