Double-lined fusilier - Pterocaesio digramma (night coloration)
Seen during a night dive.
During the day they are silvery blue and the two lines are yellow but at night they change their color to reddish.
Other examples here:
https://www.reeflifesurvey.com/species/pterocaesio-digramma/
https://www.alamy.com/stock-photo-double-lined-fusilier-pterocaesio-digramma-adult-in-night-colours-87949027.html
https://www.google.com/url?sa=i&url=https://www.flickr.com/photos/krokodiver/41191656704&psig=AOvVaw1BKdK4K9la0CMagKSD4CgQ&ust=1596442920619000&source=images&cd=vfe&ved=0CA0QjhxqFwoTCNiyk9WL_OoCFQAAAAAdAAAAABAD
The double-lined fusilier is a fusilier of the genus ''Pterocaesio''. Also known as the banana fish, it is the prefectural fish of Okinawa, Japan, where it is known as ''gurukun'' in Okinawan and ''takasago'' in Japanese.
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