I had to ask Dad what's these fishes called. He says "Dalagang Bukid". Apparently, it has no Iloco term for it. On the contrary, Mom said it's Galunggong, which is obviously wrong haha! "It is also known as the Yellow Tail Fusilier Fish. The translation for Dalagang Bukid means Mountain Maiden and the fish was named because of red underside of the fish resembles the dress of the filipinas dress they wore in the Mountains. This is a fairly common fish in the Philippines!"-PhilippinesWow.com
From @kenden