noun
bluering angelfish
A species of marine angelfish (Pomacanthus annularis) known for the blue ring-like marking on its body.
See also: ブルーリングエンジェルフィッシュ
水族館でワヌケヤッコを見た。
I saw a bluering angelfish at the aquarium.
The English-derived name, used in some contexts, but ワヌケヤッコ is the standard Japanese name.
The name likely derives from 輪抜け (wake, 'ring removal' or 'ring-shaped') and 奴 (yakko, a term used in many fish names), referring to the ring marking. The exact origin is uncertain.