Ophiarthrum pictum   (Muller & Troschel,  1842) (Brittle Star)
Organism information awaits expert curation
Class: Ophiuroidea

Image copyrights: Teresa Zubi

Size: Disc diameter 25 mm, arms 6 times the disc diameter in length.

Color: Disc patterned with gray, yellow and white; arms with dark longitudinal lines.

Disc is round, covered with thick skin and the dorsal side of it is naked. The margin of the disc is bounded by a row of large imbricating scales which are visible only on drying. The radial shields are very small, oval and separate. The interbrachial areas on the ventral side of the disc are almost naked. Small imbricating scales may be seen on drying. Arm spines blunt, twice as long as the segment with dark rings or bands. There are four oral papillae on each side of the jaw. The distal papilla is large and is about twice the size of the second and third papillae. The second and third papillae are more or less of the same size. At the apex of the jaw the tooth papillae are arranged in three rows. The oral shields are oval in shape and the adoral shields are small and triangular. They do not meet radially or interradially. The dorsal arm plates are hexagonal. The ventral arm plates are five-sided with the distal margin convex and the other edges straight. There is a single tentacle-scale for each tentacle pore. The first few lateral arm plates bear four spines and the rest of them have three spines. The spines are smooth, cylindrical and gently taper to a point.

Synonym (s)
Ophiocoma picta Muller & Troschel, 1842

Common Name (s)
Economic Importance and Threats

Habitat:  Benthic, Demersal, Coastal


• Andaman and Nicobar Islands, Andaman Island INDIA
• Bay of Bengal INDIA
• Andaman and Nicobar Islands, Nancowry INDIA
• Andaman and Nicobar Islands, Nicobar Islands INDIA
• Andaman and Nicobar Islands, Port Blair INDIA
• Andaman and Nicobar Islands INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Sastry, DRK (2001) Echinodermata (other than Holothuroidea) from the Ritchie's Archipelago, Andaman Islands Records of the Zoological Survey of India 99(1-4) 157-170 Available at - ZSI, Pune
  • Sastry, DRK (2002) Echinodermata associated with coral reefs of Andaman and Nicobar Islands Zoological Survey of India ZSI 100(3-4) 21-60 Available at - ZSI, 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
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Starfish Available at - http://www.starfish.ch/
  • James, PSBR ; Thomas, PA ; Pillai, CSG and Achari Kumaraswamy, GP (1969) ´╗┐Catalogue of types and of sponges, corals, polychaetes, crabs and echinoderms in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 7 1-66 Available at - http://eprints.cmfri.org.in/567/1/Bulletin_7.pdf
  • James, DB. (1983) Sea cucumber and sea urchin resources and Beche-de-mer industry Mariculture potential of Andaman and Nicobar Islands-An indicative survey Bulletin of Central Marine Fisheries Institute CMFRI, Cochin 34 85-93 Available at - http://eprints.cmfri.org.in/809/1/Bulletin_No_34.pdf
  • Sastry, DRK (2007) Echinodermata of India : An annotated list Records of Zoological Survey of India Occassional paper No. 271 ZSI, Kolkata 1-387 Available at - http://zsi.gov.in/checklist/Echinodermata_India_Checklist.pdf
  • Sealifebase Available at - http://www.sealifebase.org/
  • James, DB (1989) Echinoderms of Lakshadweep and their zoogeography Marine living resources of the union territory of Lakshadweep: An indicative survey with suggestions for development Bulletin of Central Marine Research Institute CMFRI 43 97-144 Available at - http://eprints.cmfri.org.in/8213/1/Bulletin_No_43.pdf
  • James, DB (1970) Studies on Indian echinoderms - 3 Ophiarthrum pictum (Muller and Troschel) (Ophiuroidea : Ophiocomidae), A new record from the Indian ocean with additional notes on the species Journal of the Marine Biological Association of India Marine Biological Association of India 12 (1-2) 136-138 Available at - http://eprints.cmfri.org.in/897/1/Article_17.pdf

Page last updated on:2011-05-05

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