Acanthephyra purpurea (English name)

Japanese: ヒオドシエビ（英語表記）Acanthephyra purpurea

Order: Decapoda, Class: Malacostraca, Family: Oplophoroidea. Body length: about 12cm, uniformly deep red color. A representative species of deep-sea shrimp, its shell is relatively soft. The rostrum is almost the same length as the cephalothorax, protrudes straight, and has 9-13 spines on the upper edge and 4-5 spines on the lower edge. During the day, it is collected from depths of 900-1800m, but at night it rises to depths of less than 900m. Juvenile shrimp are more common in the upper layers than adults, and are found at depths of 900-1300m. It has light-emitting organs on its thoracic legs that emit light when stimulated. It inhabits the Pacific, Indian, and Atlantic Oceans. All species of Oplophoroidea are deep-sea mesopelagic, and have soft shells. (→Crustacea, Decapods, Arthropods, Malacostraca)

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

軟甲綱十脚目ヒオドシエビ科 Oplophoroidea。体長約 12cmで，一様に濃赤色。深海性エビの代表種で，甲殻は比較的やわらかい。額角は頭胸甲とほぼ等長で，まっすぐ突き出し，上縁に 9～13棘，下縁に 4～5棘をもつ。日中は水深 900～1800mから採集されるが，夜間は水深 900m以浅に浮上する。稚エビは成体よりも上層に多く，水深 900～1300mに分布する。胸脚に発光器をもち，刺激を受けると発光する。太平洋，インド洋，大西洋に生息する。ヒオドシエビ科はいずれも深海中層性で，甲殻がやわらかい。（→甲殻類，十脚類，節足動物，軟甲類）

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