a fish with the scientific name Decapterus macrosoma

Galunggong is a very popular fish in the Philippines. It is usually pan-fried and served with white rice.

In English the galunggong fish has been known as the blue mackerel scad, round scad or as the shortfin scad, but these names have been applied to other fish of the Decapterus family as well. 

Colloquially, it’s referred to simply as gg (pronounced in English as “gee-gee”).