Brachioteuthis riisei
| Comb-finned squid | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Coleoidea |
| Order: | Teuthida |
| Suborder: | Oegopsina |
| Family: | Brachioteuthidae |
| Genus: | Brachioteuthis |
| Species: | B. sicula |
| Binomial name | |
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Brachioteuthis riisei (Steenstrup, 1882) |
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| Synonyms | |
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Entomopsis alicei Joubin, 1900 |
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Entomopsis alicei Joubin, 1900
Entomopsis clouei de Rochebrune, 1884
Entomopsis velaini de Rochebrune, 1884
Tracheloteuthis behnii Steenstrup, 1882
Tracheloteuthis riisei Steenstrup, 1882
Verrilliola gracilis Pfeffer, 1884
Verrilliola nympha Pfeffer, 1884
Brachioteuthis riisei, also known as the common arm squid, is a species of squid in the family Brachioteuthidae.
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.
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.
This species is widely distributed and is native to many parts of the Atlantic and Pacific Oceans, and the Mediterranean and Black Seas. Except within the boreal Pacific Ocean, this is likely a cosmopolitan species.
Young animals live in the epi-mesopelagic zone, with adults occurring in the bathypelagic zone.
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Wikipedia