Brachioteuthis riisei
| Comb-finned squid | |
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B. sicula
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| Binomial name | |
| Brachioteuthis riisei (Steenstrup, 1882)
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Entomopsis alicei Joubin, 1900 |
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Brachioteuthis riisei, also known as the common arm squid, is a species of squid in the family Brachioteuthidae.[1]
Description
This is a small species. It is almost colourless except for small chromatophores scarcely distributed. It has a long, thin, cylindrical mantle which grows to from 10 to 17 cm in length. The fin is approximately 35-50% of the length of the mantle. It has weak muscles, yet is nektonic.[2]
Larval stage
The neck of the larvae is long. Their arms have two rows of suckers, with the having multiple rows of smaller suckers in the tentacular club at the proximal hub.[2]
Distribution
This species is widely distributed and is native to many parts of the Atlantic and Pacific Oceans, and the Mediterranean and Black Seas.[3] Except within the boreal Pacific Ocen, this is likely a cosmopolitan species.[2]
Habitat
Young animals live in the epi-mesopelagic zone, with adults occurring in the bathypelagic zone.[2]
References
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