Astatheros robertsoni (Turquoise Cichlid or Robertson's Cichlid)

Astatheros robertsoni, the Turquoise Cichlid or Robertson's Cichlid, is a stunning Central American eartheater known for its beautiful blue, purple, and yellow iridescence with dark vertical bars, growing up to 9-10 inches, and noted for its territorial but generally peaceful nature unless with conspecifics, sifting substrate for food, and needing ample space despite being a smaller, less aggressive cichlid type.