1. Caudal margin truncate with angular corners in specimens larger than about 150 mm SL, central caudal fin rays distinctly shorter than those extending to the corners; basal portion of pectoral fin with distinct dark blotch or spot 2
– Caudal margin rounded with rounded corners, central caudal fin rays equal in length or longer than those extending to the corners; no distinct dark blotch or spot basally on pectoral fin 3