Loliolus investigatoris   Goodrich,  1896 (Squid)
Organism information awaits expert curation
Class: Cephalopoda

Size: Total length 42.4-77 mm; mantle length 24.45-44 mm; head length 6.3-13 mm; tentacle length 13-27 mm

Color: The body is colourless and transparent when fresh. On preservation the mantle becomes somewhat whitish with diffused chromatophores pale brown in colour and distributed all over the body. The midrib of gladius on the anterior dorsal mantle is seen as a dark brown line.

The body is conical in shape with the greatest width at about the middle. The adult females are always a little larger in size and relatively broader than males. The mantle is small, short and stout and is rounded posteriorly. The anterior margin of mantle is produced into a small lobe middorsally as in other loliginids. The midrib of gladius is seen clearly through the skin middorsally in the anterior part of mantle. The fins are large and broad and extend along more than 70 per cent of the mantle length; their anterior and lateral margins are rounded and the two fin lobes together are heart shaped. The fins of females are broader than in males. The head is small, as long as wide but narrower than the mantle width. Left ventral arm hectocotylised. Males have longer lateral arms than females whereas mantle length is short. The tentacles are short and very thin and end in narrow clubs which have small, subequal suckers arranged in four rows. The median suckers of the manus are larger in size than the peripheral ones. The gladius is short and the vane is conspicuously broad at midlength.

There is distinct sexual dimorphism.

Synonym (s)
Loliolus investigatoris Goodrich, 1856
Loliolus investigatoris Jothinayagam, 1987
Loliolus investigatoris Massy, 1916
Loliolus investigatoris Silas, 1968

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• West Bengal, Digha INDIA (Record: 21/11/1984)
• Orissa, Mahanadi Estuary (Lat: 20.32) (Long: 86.75) INDIA
• Bay of Bengal (Lat: 15) (Long: 90) INDIA
• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• West Bengal, Jhingakhali INDIA (Record: 20/05/1985)
• West Bengal, Medinipur INDIA
• West Bengal, South 24 Parganas INDIA
• West Bengal, North 24 Parganas INDIA
• Andhra Pradesh INDIA
• Orissa INDIA
• Tamil Nadu INDIA
• Tamil Nadu, Chennai INDIA
• Tamil Nadu, Chennai Coast INDIA
• Orissa, Puri INDIA (Record: 01/02/1900-02/02/1900, 06/06/1938, 05/02/1972)
• Orissa, Off Paradwip INDIA (Record: 31/01/1972)
• Orissa, Gopalpur INDIA (Record: 29/11/1962, 28/11/1973)
• West Bengal, Hugli River Mouth INDIA
• West Bengal, Fraserganj INDIA
• West Bengal, Sandheads INDIA
• Andhra Pradesh, Waltair INDIA
• West Bengal, Digha Coast INDIA

Literature Source(s)
  • Jothinayagam, JT (1987) Cephalopoda of the Madras cost (Zoological Survey of India) Technical monograph no 15 The Director ZSI, Calcutta 85
  • Venkatraman, K; Srinivasan, M; Satyanarayana, CH and Prabhakar D (2002) Faunal diversity of Gulf of Mannar biosphere reserve Conservation area series 15 ZSI 77 pp; VIII pla Available at - NCL, Pune
  • Zoological Survey of India (Eds.) (1998) Fauna Of Mahanadi estuary, Orissa Estuarine ecosystem series no 3 ZSI, Kolkata 1-218 Available at - ZSI, Pune
  • Ramakrishna; Sarkar, J and Talukdar, S (2003) Marine invertebrates of Digha coast and some recomendations on their conservation Records of the Zoological Survey of India ZSI, Kolkata 101(3-4) 1 Available at - NCL, Pune
  • Goswami, BCB (1992) Marine fauna of Digha coast of West Bengal, India Journal of Marine Biological Association of India The Marine Biological Association of India, Cochin 34 115-137 Available at - NIO, RC Kochi
  • Subba Rao, NV; Dey, A and Barua, S (1992) Estuarine and marine molluscs Fauna of West Bengal Part 9 (State fauna series 3) ZSI, Calcutta 129-268 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at -
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at -
  • Rao, NVS; Rao, KVS and Maitra, S (1991) Marine molluscs State fauna series 1: Fauna of Orissa Zoological Survey of India, Calcutta Part 3 1-175 Available at - NIO, Goa
  • 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 -
  • Silas, EG; Sarvesan, R; Rao, KS; Nair, KP and Meiyappan, MM (1985) Identity of common species of cephalopods of India Cephalopod bionomics, fisheries and resources of the exclusive economic zone of India Bulletin of Central Marine Research Institute CMFRI 37 13-37 Available at -
  • Dey, M and Mitra, A (2005) Molluscan community around Digha coast, West Bengal, India Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 2(1&2) 43-47 Available at - NIO, Goa
  • 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 -
  • Zoological Survey of India (1996) ENVIS center on faunal diversity Available at -

Page last updated on:2011-12-19

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