Bobtail squid

Sepiola atlantica

The dwarf cuttlefish ( Sepiolida ) are an order of squid, which are very closely related to the cuttlefish.

Features

Dwarf cuttlefish are generally smaller than cuttlefish, do not have a Kalkschulp ( cuttlebone ) and have a rounder mantle. The coat length is usually one to four, sometimes up to eight inches. In addition to eight occupied with suction cups arms they have two fishing tentacles.

Dwarf cuttlefish live in a symbiotic relationship with bioluminescent bacteria, including Vibrio fischeri. You are in a light organ in the mantle of cephalopods and are supplied with a sugar - amino acid solution. In return, they receive exactly as much light that the silhouette of the squid disappears in the incident light, when viewed from below.

Habitat

Most species live in shallow coastal waters of the Pacific, the Indian Ocean and the Atlantic Ocean and its marginal seas. You can move both using their fins as well as by the recoil from its siphon.

System

• Dwarf Cuttlefish ( Sepiolidae Leach, 1817) True dwarf cuttlefish ( Sepiolinae Leach, 1817) Euprymna Steenstrup, 1887
• Sepiola Leach, 1817
• Rondeletiola Naef, 1921
• Sepietta Naef, 1912
• Inioteuthis Verrill, 1881

• Austrorossia Berry, 1918
• Rossia Owen, 1834
• Semirossia Steenstrup, 1881
• Neorossia v. Boletzky, 1971

• Heteroteuthis Gray, 1849
• Stoloteuthis Verrill, 1881
• Iridoteuthis Naef, 1912
• Nectoteuthis Verrill, 1883
• Sepiolina Naef, 1912

While the classification of squid is now generally accepted at the family level, the classification of the major groups within the squid is not yet stable. Jereb and Roper the Sepiolidae in their monograph published in 2005, again as a family within the Sepiida.