著者

井藤 大樹 難波 拓登 庄野 耕生

出版者

国立大学法人 鹿児島大学総合研究博物館

雑誌

Ichthy, Natural History of Fishes of Japan (ISSN:24357715)

巻号頁・発行日

vol.15, pp.10-16, 2021 (Released:2021-12-08)

著者

井藤 大樹 庄野 耕生 瀬能 宏

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

pp.22-029, (Released:2023-01-16)

参考文献数

32

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A single juvenile specimen (93.2 mm standard length) of the rare syngnathid fish Microphis (Coelonotus) argulus, collected from the Uchizuma-gawa River, Tokushima Prefecture, Shikoku Island, Japan, is the first record from Shikoku Island and northernmost record of the species. We newly found that M. (C.) argulus is distinguished from M. (C.) leiaspis in the fresh juvenile specimens by the following combination of characters: jaws to snout reddish (vs. brownish in the latter); small white dots present from behind eye to pectoral-fin base (vs. absent); operculum and pectoral-fin base brownish (vs. silverywhite). The M. (C.) argulus specimen may have been transported northward by the Kuroshio Current from the usual distribution range of the species, and recruited to the Uchizuma-gawa River.