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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Phreatichthys andruzzii ： ウィキペディア英語版 Phreatichthys andruzzii ''Phreatichthys andruzzii'' is a species of ray-finned fish in the Cyprinidae family. It is the only species of the genus ''Phreatichthys'', and is endemic to Somalia. This cave-adapted fish is whitish (non-pigmented) and blind. It is considered to have evolved in the cave environment for some two million years. Its name derives from the Greek words ''phreasatos'' for spring, and ''ichthys'' for fish. It grows to a maximum length of . This fish is the first animal discovered that does not adjust its biological clock with the light of the Sun. It has an unusual internal clock, which measures the passage of time with an extremely long period (up to 47 hours). It is also completely blind to all light stimuli. ==References== 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「Phreatichthys andruzzii」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.