Dive into project updates, methods & techniques (including instructional videos), and reference collection highlights to learn how our team and collaborators are expanding this one-stop resource for fish ageing.
FishAge has released the second video in its Ruddy Bowfin instructional series, demonstrating our standardized method for embedding otoliths in epoxy resin. This critical preparation step supports precise thin sectioning and improves consistency and accuracy in fish age estimation.
FishAge attended the 2026 Georgia Chapter of the American Fisheries Society meeting to share project updates, connect with collaborators, and highlight FishAge as a national resource for fish age estimation training.
Chinook Salmon from Idaho have been added to the FishAge website, featuring known-age (3–5) samples from dorsal fin rays collected at Sawtooth, Rapid River, and Clearwater hatcheries. This addition expands our salmonid reference library and supports accurate age determination and training efforts.
FishAge has released a new instructional video demonstrating otolith extraction for Ruddy Bowfin (Amia calva). This video marks the start of an expanding instructional series focused on otolith extraction, processing, and ageing techniques, supporting training and consistency across fisheries age and growth labs.
FishAge.org has just added a new Lake Trout otolith collection from Lake Ontario—a complete set of sectioned, high-resolution images from known-age fish. Sourced from a study by Osborne et al. (2022), this validated dataset offers an important reference for improving age interpretation accuracy and consistency across labs. Explore the collection, review study findings on precision and bias in Lake Trout aging, and see how accessible, known-age material supports better training and quality control in fisheries research.
Have known-age fish structures or a validation study to share? Contact us to feature your work!
New Video Series Coming! We’re pleased to share that we’re in the process of creating a new instructional video series to support fish ageing professionals, students, and researchers. These videos will walk through key techniques and workflows used in ageing labs, providing practical guidance alongside
If you’ve ever aged a fish, chances are you’ve worked with an otolith. These small, calcified structures, often called “ear stones,” are located in a fish’s inner ear and play a key role in balance and hearing. For fisheries scientists, they’re one of the most
At FishAge.org, our mission is clear: to provide a publicly available repository of digital imagery from known-age fish structures. This growing archive serves as an invaluable resource for fisheries biologists, offering reference materials that advance fisheries management while also educating and training the next generation
Big news from the lab! The Image Database is growing… this time, we’re heading for saltier waters New Additions: Black Drum & Spotted Seatrout The first marine species to join the database are Black Drum and Spotted Seatrout.These specimens were collected off the coast of
FishAge has released the second video in its Ruddy Bowfin instructional series, demonstrating our standardized method for embedding otoliths in epoxy resin. This critical preparation step supports precise thin sectioning and improves consistency and accuracy in fish age estimation.
FishAge attended the 2026 Georgia Chapter of the American Fisheries Society meeting to share project updates, connect with collaborators, and highlight FishAge as a national resource for fish age estimation training.
Chinook Salmon from Idaho have been added to the FishAge website, featuring known-age (3–5) samples from dorsal fin rays collected at Sawtooth, Rapid River, and Clearwater hatcheries. This addition expands our salmonid reference library and supports accurate age determination and training efforts.
FishAge has released a new instructional video demonstrating otolith extraction for Ruddy Bowfin (Amia calva). This video marks the start of an expanding instructional series focused on otolith extraction, processing, and ageing techniques, supporting training and consistency across fisheries age and growth labs.
FishAge.org has just added a new Lake Trout otolith collection from Lake Ontario—a complete set of sectioned, high-resolution images from known-age fish. Sourced from a study by Osborne et al. (2022), this validated dataset offers an important reference for improving age interpretation accuracy and consistency across labs. Explore the collection, review study findings on precision and bias in Lake Trout aging, and see how accessible, known-age material supports better training and quality control in fisheries research.
Have known-age fish structures or a validation study to share? Contact us to feature your work!
New Video Series Coming! We’re pleased to share that we’re in the process of creating a new instructional video series to support fish ageing professionals, students, and researchers. These videos will walk through key techniques and workflows used in ageing labs, providing practical guidance alongside
If you’ve ever aged a fish, chances are you’ve worked with an otolith. These small, calcified structures, often called “ear stones,” are located in a fish’s inner ear and play a key role in balance and hearing. For fisheries scientists, they’re one of the most
At FishAge.org, our mission is clear: to provide a publicly available repository of digital imagery from known-age fish structures. This growing archive serves as an invaluable resource for fisheries biologists, offering reference materials that advance fisheries management while also educating and training the next generation
Big news from the lab! The Image Database is growing… this time, we’re heading for saltier waters New Additions: Black Drum & Spotted Seatrout The first marine species to join the database are Black Drum and Spotted Seatrout.These specimens were collected off the coast of
