Alaska Age and Growth Age Reading Interactive Demonstration
January 05, 2018
The is an interactive application used to determine the age of fish species. With this application, the user can click on the ageing structure image to flag growth rings, zoom and pan the ageing structure image, use a movable scale bar, and compare the user's age result with the experienced age reader's age.
Want to try your hand at ageing fish bones? Try our latest interactive fish ageing program: ARD 2.0. To get started, click on the link to ARD 2.0 and select a species you want to start with to begin ageing. Then click on the otolith image where you see annular marks. Submit the marked image. ARD will automatically mark the image with marks from an experienced age reader, and compare your age with the experienced age reader's age.
Demonstration Species List
- Atka Mackerel
- Dover Sole
- Flathead Sole
- Greenland Halibut
- Pacific Cod
- Pacific Ocean Perch
- Sablefish
- Walleye Pollock (GOA)
- Yellowfin Sole
Additional Resources
- Age and Growth Research in Alaska
- Alaska Age and Growth Procedures for Otolith Examination
- Age and Growth Fish Otolith Thin Sectioning Procedures
- Alaska Age and Growth Age Reading Interactive Demonstration
- Age and Growth FAQ
- Age Determination of Alaska Groundfish Species
- Explanation of Precision Statistics
- Fish Otolith Chronologies
- Age Reading Interactive Demonstration Instructions