Genus Arius refers to a group of catfish species that are found in fresh and brackish waters across the world. There are several synonyms used for this particular genus, which help to clarify its characteristics and relationships with other catfish species. These synonyms include Bagrichthys, Batrachocheilus, Brachyplatystoma, and Cephalocassis. The Arius genus is known for its elongated body shape, wide head, and long barbels that help it to navigate murky waters. Most species in this group feed on small fish and crustaceans, and are important to both commercial and local fishers. Understanding the synonyms for the Genus Arius can help researchers and enthusiasts to distinguish between different species, and understand their individual roles within the ecosystem.