Callionymus is a genus of fish commonly known as dragonets. These small, colorful fish are primarily found in shallow marine environments, often inhabiting sandy or muddy substrates. They are characterized by their elongated bodies and large, fan-like pectoral fins, which they use for swimming and maneuvering. Dragonets are known for their unique mating behavior, where males display vibrant colors and perform elaborate courtship dances to attract females. They primarily feed on small invertebrates and are often sought after in the aquarium trade due to their striking appearance and interesting behaviors.