Fish have a lateral line along the length of their body. It begins just behind the gill plates and travels to the tail. This line can detect vibration and magnetic fields, and gives fish a sharp sense of anything that moves near them.
The lateral line on a fish senses vibration similar to the way human ears do.
Fish use sound to locate smaller fish to eat and avoid bigger fish that might eat them.
Fishermen can use sound to attract fish.
Poppers can splash and gurgle, while rattles add sound to soft plastic baits. Fish hear the sound and come to investigate.
The same lateral line anglers take advantage of to attract fish can detect noises that scare away fish. A sinker dropped in a boat bottom or the clumsy bang of a boot can send fish running for cover.
Article Written By Stephen Byrne
Stephen Byrne is a freelance writer with published articles in "Nor'East Saltwater," "Sportfishing" magazine, "Pacific Coast Sportfishing" and "Salt Water Sportsman." As a fishing charter captain, he was also interviewed for a feature in "Field and Stream." Byrne studied environmental science at the State University of New York at Delhi.