Age and growth of red-spotted grouper
Epinephelus akaara collected from the coastal waters of Toyama Prefecture were studied by observing transverse otolith sections. Opaque zones were confirmed to be annuli and mainly formed in August. The von Bertalanffy growth equation was estimated as:
TLt = 507 (1–
e-0.130(t+1.80)) for males and females, where
TLt is the total length (mm) at
t (year). This study is the first report of age and growth of red-spotted grouper in the Japan Sea. Our samples collected from Toyama Prefecture showed a lower growth rate than estimates from the Seto Inland Sea.
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