Galunggong is a type of fish known as the mackerel scad, scientifically named Decapterus macarellus. It is a small, oily fish with a somewhat elongated, round body, which has fins ranging in color from metallic black to blue-green and a white belly. This fish is widely found in Philippine waters and is popular in the local cuisine, often eaten fried or grilled. Galunggong has a dark, somewhat oily but tasty flesh and is known for its mackerel-like flavor. It is considered a staple and inexpensive fish in the Philippines, symbolizing the everyday diet of many Filipinos.