Family Idiosepiidae - pygmy cuttlefish

  Order
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  Class
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Cephalopoda
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  Environment
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Fresh : No | Brackish : No | Marine : Yes
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  Remark
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Small animals maturing at less than 20 mm mantle length; mantle elongated and slightly pointed at he posterior end; anterior edge of mantle not fused to head; head prominent with large, bulbous eyes covered by a cornea; nuchal cartilage absent; funnel locking cartilage oval-shaped in all species in the Western Central Pacific. Glandular oval attachment organ located posteriorly on dorsal surface of mantle. Gladius a vestige only. Fins small, kidney-shaped, attached laterally to the posterior end of the mantle and slightly oblique to the longitudinal body axis. Arms short, with 2 rows of suckers; both ventral arms (IV) of mature males hectocotylized by loss of suckers on most parts of arms and by tips of left ventral arm becoming bilobed. Tentacles short and slender, with tentacular clubs not expanded, supporting 2 to 4 rows of suckers. Occurs in shallow seagrass and other inshore habitats (Ref. 346).
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  Division
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Ref.
[ e.g. 9948]                       
Glossary
                    [ e.g. cephalopods]


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