Skip to main content
Unsupported Browser Detected

Internet Explorer lacks support for the features of this website. For the best experience, please use a modern browser such as Chrome, Firefox, or Edge.

Bluefish: QA/QC Exercise Results

Results of the QA/QC exercises for ageing bluefish

Bluefish, Pomatomus saltatrix

Image
Side-profile illustration of bluefish with shiny white and light blue body. Credit: NOAA Fisheries/Jack Hornady

Eric Robillard (ER) has been working with Bluefish since 2015; before that, the age reader was Nicole Calabrese (NC). Sectioned otoliths are viewed with transmitted light.

In tests where agreement is below 90%, bias indicates either the P-value of a symmetry test or ‘n/s’ (test not significant at the α = 0.05 level). The Evans & Hoenig test was used to test bias starting 1/2022; prior to that, a Bowker's test was used.

Sample SourceTest TypeDate CompletedAge ReaderNumber AgedNumber TestedCV (%)Agree-ment (%)Bias
2024 Autumn Survey (202404)Precision2/2025ER211270.00100.0 
2023 Commercial Samples (Q1)Precision11/2023ER162401.6190.0 
2022 Commercial Samples (Q4)Precision3/2023ER278504.6886.0n/s
2022 Commercial Samples (Q3)Precision2/2023ER159461.4993.5 
2022 Commercial Samples (Q1-Q2)Precision11/2022ER218451.6191.1 
2021 Commercial Samples (Q1-4)Precision5/2022ER456872.8686.2n/s
2020 Commercial Samples (Q4)Precision4/2021ER329591.0296.6 
2020 Commercial Samples (Q3)Precision3/2021ER397716.1387.3n/s
2020 Commercial Samples (Q1-2)Precision12/2020ER304602.4483.3n/s
2019 Commercial Samples (Q4)Precision4/2020ER274611.8290.2 
2019 Commercial Samples (Q3)Precision2/2020ER221451.6193.3 
2019 Commercial Samples (Q1-2)Precision11/2019ER264500.9894.0 
2018 Commercial Samples (Q4)Precision5/2019ER290662.5792.4 
2018 Commercial Samples (Q3)Precision3/2019ER260575.2686.0n/s
2015 Commercial Samples (Q1-4)Precision3/2016ER5601002.6986.0n/s
2014 Autumn Survey (201404)Precision7/2015NC1174014.1480.0n/s

Last updated by Northeast Fisheries Science Center on May 09, 2025

Age and Growth