This study analyzed the morphometric characteristics and otolith-related properties of C. abei (Le Danois 1978) collected from the Suruga Bay, Japan. A total of 133 specimens were obtained between 2021–2022, with total length (TL) ranging from 37.44 – 268.75 mm (mean ± SD: 124.67 ± 42.03). Sixteen morphometric characteristics were measured, and a single linear regression was applied to body and otolith morphometrics. Consequently, all the body parts increased with body size, demonstrating strong relationships overall (r2 > 0.90). No differences were found in the size and weight of the left and right sagittae. Relatively strong relationships were mostly observed (r2 > 0.890) between fish and otolith parameters. This study presents the shape indices of otoliths for C. abei, showing a significant resemblance to those of other anglerfish (Lophiidae: Lophiiformes) species, for the first time. Therefore, the shape of otolith (n = 124) is irregular and tending towards rectangularity rather than being perfectly circular or elliptical. The revealed shape indices of otolith are intended to contribute for fisheries management and conservation strategies in the regional fisheries biology of Suruga Bay.
