lateral line system

What is lateral line system?

lateral line system meaning a series of sense organs that detect pressure or vibrations along the heads and sides of cyclostomes, fishes, and some amphibians. It consists of a network of sensory hair cell clusters (neuromasts) and small water-filled canals that lie immediately beneath the skin and extend along the sides of its body. This network is sensitive to external motion

Image of snapper
Note the lateral line of the Caribbean red snapper(Lutjanus purpureus) with 49 to 53 scales, which extend onto the base of the caudal fin. (Photo: U.S. Food and Drug Administration)

 

reference: Coral Reef Information System – Glossary

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