Gempylus serpens, commonly known as the snake mackerel, is a species of fish found in tropical and subtropical oceans worldwide. It is characterized by its elongated body, sharp teeth, and a distinctive coloration that includes a dark blue or greenish back and silver sides. This fish can grow up to 2 meters in length and is known for its speed and agility in the water. The snake mackerel primarily feeds on smaller fish and squid, using its sharp teeth to catch prey. It is often found in deeper waters, typically at depths ranging from 100 to 300 meters. Gempylus serpens is also known for its high oil content, which can lead to digestive issues in humans if consumed in large quantities.