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''Ancistroteuthis lichtensteinii'', also known as the angel clubhook squid or simply angel squid, is a species of squid in the family Onychoteuthidae and the sole member of the genus ''Ancistroteuthis''. It grows to a mantle length of 30 cm.〔Roper C.F.E., M.J. Sweeney & C.E. Nauen 1984. ''Cephalopods of the world''. Food and Agriculture Organization, Rome, Italy.〕 It can be found in the western Mediterranean Sea, subtropical and tropical eastern Atlantic Ocean and western north Atlantic Ocean. Its diet include mesopelagic fish and pelagic crustaceans. It is sometimes taken as bycatch by commercial fisheries, but is not a targeted species.〔 Image:AncistrotYoung - from Commons.jpg|Dorsal and ventral views of juvenile ''A. lichtensteinii'' (16 mm ML) Image:AncistrotNucFolds.jpg|Dorsal and lateral views of head and occipital folds (145 mm ML) Image:AncistroteuClub.jpg|Oral view of tentacular club (145 mm ML) Image:AncistroteuthisGladius.jpg|Ventral and enlarged side views of gladius (165 mm ML) Image:AncistroLichtBeaks - from Commons.jpg|Upper (left) and lower (right) beaks (URL ca. 3 mm) ==References== *Naef, A. 1921-23. ''Cephalopoda. Fauna und Flora des Golfes von Neapel''. Monograph, no. 35. (translation: A. Mercado 1972. Israel Program for Scientific Translations Ltd., Jerusalem, Israel. 863pp., IPST Cat. No. 5110/1,2. ) *Pfeffer, G. 1912. Die Cephalopoden der Plankton-Expedition. Zugleich eine Monographische Übersicht der Oegopsiden Cephalopoden. ''Ergebniss der Plankton- Expedition der Humboldt-Stiftung'' 2:1-815. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ancistroteuthis」の詳細全文を読む スポンサード リンク
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