Fish have well developed sensory systems similar to other vertebrates. They have eyes capable of color vision and detecting ultraviolet light. Their sense of smell and taste are very sensitive and play important roles in behaviors like feeding, social interactions, and migration. Fish hear through their inner ear and lateral line system, which detects vibrations, and use their swim bladder and otolith to sense sound and spatial position. Their endocrine system controls reproduction and other bodily functions through hormones produced by organs like the hypothalamus and pituitary, influenced by environmental factors.