Saddleback Butterflyfish (Chaetodon ephippium) セグロチョウチョウウオ
An adult Saddleback Butterflyfish. Amami 2019
A pair of Saddleback Butterflyfish. Amami 2023
Saddleback Butterflyfish in same area as the above picture after coral bleaching. Amami 2024
The juvenile Saddleback Butterflyfish has a rounder saddle and no streamer.