noun
bluespine unicornfish; short-nose unicornfish
A species of Indo-Pacific tang (Naso unicornis) with a distinctive horn-like protrusion. The name テングハギ combines 天狗 (tengu, a long-nosed goblin) and 剥ぎ (hagi, filefish/triggerfish), referring to its appearance.
ダイバーはサンゴ礁でテングハギの群れを見つけた。
The diver found a school of bluespine unicornfish at the coral reef.