こちょうざめ 小蝶鮫 LinksSentence search for 小蝶鮫Sentence search for こちょうざめSentence search for コチョウザメKanji details for 小, 蝶 and 鮫Edit in JMdict Noun1. sterlet (Acipenser ruthenus)Usually written using kana alone, See also 変わり蝶鮫Other formsコチョウザメ Discussions Log in to talk about this word.