Match the following fish anatomical structure with its function. 1: Exchange oxygen and carbon dioxide with the fish's environment Exchange oxygen and carbon dioxide with the fish's environment 2: Allows fish to maintain equilibrium and stay at any level of water they desire Allows fish to maintain equilibrium and stay at any level of water they desire 3: Provide propulsion and stabilization within the water Provide propulsion and stabilization within the water 4: Sensory organ that detects movement and vibrations in the water Sensory organ that detects movement and vibrations in the water 5: Posterior opening for the digestive, urinary, and reproductive tracts. Posterior opening for the digestive, urinary, and reproductive tracts.