Alpheus rapax   Fabricius, J. C.,  1798 (Shrimp)
Organism information awaits expert curation
Class: Malacostraca

Image copyrights: Izuzuki Diver

Size: Carapace length 17.9mm

Colour: Black and white transverse bands across the cephalo-thorax and
abdomen. Large chela with similar transverse markings, clearly visible on the
inner side also. Tips of fingers white.

The compressed large chela roughly quadrangular in cross section
2.5 times as long as broad. Finger with thickly set rows of setae on the opposing edges. Merus only twice as long as broad. Inferior internal margins with six movable spines and ending in a strong tooth. An excavation present near the lower rounded portion of the palm.
Small chela compressed, 3.8 times as long as wide, opposing flattened faces of fingers with thick rows of bristles, tip hooked. Merus 2.5 times as long as wide, with 7 movable spines in internal-inferior margin.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Demersal, Estuarine, Muddy


• Palk Bay (Lat: 9.5) (Long: 79.25) INDIA
• Palk Bay INDIA (Depth: 1-2 mts)
• Tamil Nadu, Mandapam Camp INDIA (Depth: 1-2 mts)
• Tamil Nadu, Rameswaram INDIA (Depth: 1-2 mts)
• Kerala, Kochi Backwaters INDIA (Record: 1969)
• Kerala, Kochi Backwaters INDIA

Literature Source(s)
  • Rao, DVS (2005) Comprehensive review of the records of the biota of the Indian Seas and the introduction of non-indigenous species Aquatic Conservation: Marine and Freshwater Ecosystems John Wiley and Sons, Ltd. 15(2) 117-146 Available at -
  • Integrated Taxonomic Information System (ITIS) Available at -
  • Banner, DM and Banner, AH (1985) The alpheid shrimp of Indonesia, based upon J. G. De Man's "The Decapoda of the Siboga Expedition, part II. Family Alpheidae" Marine research in indonesia Lembaga Oseanologi Nasional and Lembaga Illmu pengetahuan Indonesia, jakarta, Indonesia 25 28856 Available at - NIO, Goa
  • Kensley, B (1981) On the Zoogeography of Southern Afrian Decapod Crustacea, with a distributional checklist of the species Smithsonian Contributions to Zoology Smithsonian Institution Press, Washington, D.C. 338 23377 Available at - NIO, RC Kochi
  • Debelius, H (2001) Crustacea Guide of the world 11-318 Available at - CMFRI, Kochi
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Izuzuki diver Available at -
  • Sealifebase Available at -
  • Thomas, MM. (1976) New records of four Alpheid shrimps from the Indian waters Journal of the Marine Biological Association of India The Marine Biological Association of India 18(3) 667-669 Available at -
  • Mohamed, KH and Rao, PV (1971) Estuarine phase in the life history of the commercial prawns of the west coast of India Journal of the Marine Biological Association of India Marine Biological Association of India 13(2) 49-161 Available at -
  • Sundaram, KS; Sarvesan, R; Mohamed, KH and Shanbhogue, SL (1969) Catalogue of molluscs, prawns, stomatopods and marine algae in the reference collections of the central marine fisheries research institute Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 9 1-52 Available at -

Page last updated on:2011-03-16

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