Species (Elops saurus, family Elopidae) of primarily tropical coastal marine fish. The ladyfish is slender and covered with fine silver scales; the dorsal and anal fins can be depressed into grooves. A predatory fish, it has small, sharp teeth and a bony throat plate between its mandibles. It is up to 35 in. (90 cm) long and weighs up to 30 lbs (14 kg). The young are transparent and eel-like.