noun ダウンロード 🔗共有 ナンヨウハギ Any of many species of reef-dwelling fishes, most of them brightly coloured, of the family Acanthuridae. They are named "surgeonfish" because they bear erectile, scalpel-like, dangerously sharp spines on either side of the caudal peduncle. Examples : "While snorkeling on the coral reef, we spotted a vibrant blue surgeonfish, easily identifiable by the sharp, scalpel-like spines near its tail. " サンゴ礁でシュノーケリングをしていたところ、尾びれの近くにある鋭い、メスのようなトゲで容易に識別できる鮮やかな青色のナンヨウハギを見つけました。 fish animal biology ocean nature AIとチャット語彙ゲーム読解練習