otolith

Otoliths are ear bones in fish.  Bony fish (not sharks or rays) have three pairs of otoliths: Sagitta: detects sound and converts sound waves into electrical signals (i.e., hearing); Asteriscus: detects sound and is involved in hearing; and, Lapillus: detects gravitational force and sound. Sagittal otoliths are sometimes used for aging fish because they add … [Read more…]