Many fish have an outer covering of scales. Scales protect fish, much like a suit of armor. All fish have a slimy covering of mucus. This substance allows the fish to swim through the water with very little drag and also makes it difficult for other organism to attach to the fish.
What is the main function of scales on a fish?
The primary purpose of scales is to give the fish external protection.
What are the benefits of scales?
Scales develop co-ordination between the two hands. Scales help develop finger strength. Scales help to improve a pupil's keyboard geography. Scales help students develop a strong sense of rhythm, articulation and speed, which are all important for playing the piano.