Smooth sandeelThe smooth sandeel is a species of sand eel in the family Ammodytidae.DescriptionIt maximum length is, typical adults measuring. It has 53–56 dorsal soft rays and 26–31 anal soft rays. Its palate has no pointed teeth, its lateral line is branched, and only the posterior third of the body is scaly. It has 64–72 vertebrae and is golden brown or pink, with a silvery belly. It is also notable for its plectrum-shaped eye.Distribution and habitatIt is a demersal fish living in the waters off Great Britain, Ireland and in the North Sea. It made its first appearance in the Mediterranean Sea in 1990 off the Spanish coast, where there is now a stable population co-occurring with Gymnammodytes cicerelus.BehaviourThe smooth sandeel spawns in summer. It feeds on the plankton.