Question: what is one major difference between sharks and ray-finned fish?
Answer: Differences In Appearance Between Sharks And Rays Depending on the species, rays range in size from 10 in (25 cm) to 7 ft (2 m). They also have no anal fins but they always have spiracles on the top of their heads. Sharks on the other hand, even with flatter bodies tend to be more elongated and slender.