Actually, there are other senses. For example, we have a sense of equilibrioception which checks our balance, and proprioception which is the sense of the relative position of one's own parts of the body and strength of effort being employed in movement. Fishes have a sense system which no land animal has. It is called the lateral line system. This senses movement and vibration in the water pressure and other functions. Some fish can sense patterns of electrical current in the water.