Head with nearly straight anterior margin and a central notch. First dorsal fin is extremely tall and curved, its origin directly over pectoral fins inner margins. First dorsal fin free rear tip well before pelvic fin origin. Second dorsal fin is tall, with short free rear tip not reaching upper caudal fin origin. Second dorsal fin, pelvic and anal fins, high with deep notch on posterior margins. Anal fin is equal to or larger than second dorsal fin. Juveniles may have dusky markings on fin tips.