Genus Rachycentron is a scientific term that refers to a particular group of fishes. Some synonyms for this term include cobia, black salmon, black kingfish, and lemonfish. These fish are found primarily in warm-temperate to tropical waters worldwide. They are highly valued for their excellent taste and are often targeted by commercial and recreational fishermen alike. The cobia, or Genus Rachycentron, is recognizable by its elongated body, dark brown coloring, and a broad, flattened head. These fish are known to be strong fighters and can reach lengths of up to 6 feet and weigh as much as 100 pounds. Their popularity among anglers has led to strict regulations on their harvest to ensure sustainability.