What name is given to the larval stage of the lamprey that spends years filter-feeding in sediment?

Answer

*Ammocoetes*

After hatching in freshwater streams, lampreys exist for several years as larvae called *ammocoetes*, during which time they strain food particles from the water.

What name is given to the larval stage of the lamprey that spends years filter-feeding in sediment?
nametaxonomybiologyanimallamprey