Diadem Cichlid - Royal Acara (Aequidens diadema)

The Diadem Cichlid, also known as the Royal Acara (Aequidens diadema), is a vibrant South American freshwater fish prized for its metallic blue-green scales, graceful shape, and distinctive head "crown" markings, making it a striking centerpiece fish for large cichlid tanks, though it's a moderately aggressive builder that needs ample space and tankmates like larger tetras or other robust cichlids to thrive.