Fig 1.
Survey areas for Conger myriaster in the Yellow and East China Seas.
Rectangles indicate the approximate fishing areas of samples.
Table 1.
Sample size of Conger myriaster specimens collected in the Yellow and East China Seas.
Fig 2.
Digital photograph of sagittal otoliths (right otolith, convex outer side) of Conger myriaster showing measurements analyzed in this study(a) and the transverse sectioned otolith of Conger myriaster (b, c).
Fig 3.
The distribution of fish total lengths, otolith weights and otolith length observed at each age (years) for Conger myriaster (n = 409).
Fig 4.
Variable importance indices for classifying Conger myriaster ages using the random forest model.
Table 2.
Counted age versus predicted age of Conger myriaster in the test dataset sampled from October 2016 to December 2017.
Fig 5.
Von Bertalanffy growth curves for mean length at age for model-based age (dashed line) and counted age (solid line).
Open circles represent the mean total length at every counted age class, and the solid circles represent the mean total length at every model-based age class.