Ruvettidae is a family of fish commonly known as snake mackerels. They are found in warm, tropical oceans and are characterized by their elongated bodies and sharp teeth. These fish are known for their predatory behavior, often feeding on smaller fish and squid. The family Ruvettidae includes several species, with the most notable being the Ruvettus pretiosus, also known as the escolar. These fish can grow quite large and are sometimes caught for commercial purposes. However, they are also known to cause digestive issues in humans if consumed in large quantities due to the presence of certain wax esters.