Neobythitinorum sp.

Teleost fish otolith.

A teleost fish otolith is a hard, calcareous structure found in the inner ear of bony fish (teleosts) and performs essential functions for their balance and hearing., as well as an accurate record of their growth and age. Composed mainly of calcium carbonate (aragonite) and a protein similar to collagen, its composition, shape and the growth rings that accumulate throughout the life of the fish are used in scientific studies to identify species, determine their age and understand their diet and environment.