Rhinobatos variegatus   Nair & Lal Mohan,  1973 (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Elasmobranchii
Order:Rajiformes
Family:Rhinobatidae

Description
Color: Body gray dorsally, ventrally pale; snout with three brown broad lateral bands on dorsal side and one medially; tip of snout pigmented ventrally. Pectoral and pelvic fins with variegated markings.

Disc wedge-shaped, snout subacutely pointed, its posterior margins evenly concave; rostral ridges separated by a considerable interspace throughout its length except its tip where it is expanded. Interorbital width about 3.9, eye diameter 4.9 times, both in snout length. Nostrils oblique, the anterior margin with inner and outer flaps, the former reaches about level of inner corner of nostril; length of nostril about 2 times in width of mouth. Spiracles close to eyes, about 2/5ths in eye diameter. Two dorsal fins, about equal in height; first dorsal fin base 2.7-2.8 times of interspace between dorsal fins. Back with closely set denticles, with median row of minute denticles; tip of snout smooth.

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)
Rhinobatos variegatus Nair & Mohan 1973
Rhinobatos variegatus Nair & Lal Mohan 1973
(Senior synonym)

Common Name (s)
• Variegated Shovelnose Guitarfish (English)
Economic Importance and Threats

Ecology
Habitat:  Demersal

Biogeography


• Tamil Nadu, Gulf of Mannar INDIA
• INDIA

Literature Source(s)
  • Nair, RV and Mohan, SL (1973) On a new deep sea skate, Rhinobatos variegatus, with notes on the deep sea sharks Halaelurus hispidus, Eridacnis radcliffei and Eugaleus omanensis from the Gulf of Mannar Senckenbergiana Biologica 54(1-3) 71-80 Available at - NCL, Pune
  • Zoological Survey of India (Eds) (1991) Animal resources of India (Protozoa to Mammalia) ZSI 1-694 Available at - NCL, Pune
  • 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
  • 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:2011-10-10

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