Otolith from a Bloater Chub used for age analysis
![Bloater Otolith Used to Determine Fish Age](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Bloater%20Otolith%20-%20USGS.jpg?itok=XXxklFFF)
Detailed Description
An otolith, sometimes called “earstone,” of a bloater, a small prey fish in the Great Lakes. Fishery scientists interpret the age of bloater and other fishes by counting annual growth rings on their otoliths.
Sources/Usage
Public Domain.