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Rhinopias eschmeyeri
''Rhinopias eschmeyeri'' is a Scorpionfish from the Indo-West Pacific. It grows to an average size of 16.6 cm in length. Common names in English are Eschmeyer's scorpionfish and Paddle-flap scorpionfish.〔Allen, Gerald R., et al., Reef Fish Identification: Tropical Pacific (2003, 2005), p. 373〕 It occasionally makes its way into the aquarium trade. Although some have raised questions as to whether R. eschmeyeri is a morphological variant of Rhinopias frondosa rather than a separate species, a 2006 study by Motomura and Johnson〔Motomura, Hitoyuki and Johnson, Jeffrey W., Validity of the Poorly Known Scorpionfish, ''Rhinopias eschmeyeri'', with Redescriptions of ''R. frondosa'' and ''R aphanes'', ''Copeia'', V. 2006, No. 3 (Sept. 15, 2006), pp. 500-515. 〕 confirmed the species' existence and distinguished it from other members of the genus Rhinopias.
==Description==
Eschmeyer's scorpionfish has a maximum length of and its dorsal fin has twelve spines and eight to nine soft rays while the anal fin has three spines and five soft rays.〔(【引用サイトリンク】title= Rhinopias eschmeyeri Condé, 1977: Eschmeyer's scorpionfish )〕
According to Motomura and Johnson (p. 502), R. eschmeyeri "differs from R. aphanes and R. frondosa in having two tentacles on the underside of the lower jaw (vs. 12-18 tentacles in R. aphanes and 9-24 in R. frondosa), lacking tentacles on the frontal below the eyes in anterior view (vs. 2-4 tentacles present in the two species), lacking distinct tentacles on the lateral surface of the body above the lateral line (vs. present), having short tentacles, without distinct branches along distal margins, on the supraocular and posterior lacrimal spines (vs. long tentacles, with distinct branches) . . . and having head, body, fins, and tentacles usually without distinct pigmentation or markings (vs. with elongate black-margined white markings each with a central region of yellow, green, or brown in R. aphanes and with numerous distinct circular dark-margined spots in R. frondosa)." In the two comparison photos at right, one can observe these differences in the number of tentacles on the underside of the jaw, the presence or absence of tentacles in front below the eyes, and the branched or unbranched form of the tentacles above the eye, as well as the obvious difference in pigmentation and markings.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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