Meaning: The shiny scales of a fish help to reflect light, making it difficult for predators to see them in the water.
Choice of Words: Shiny means having a bright or glossy surface that reflects light. Scales are thin, flat plates that cover the body of a fish. Reflect means to bounce back light or sound waves. Light is the natural agent that stimulates sight and makes things visible. Hide means to conceal something or make it difficult to see.