Limited published biological information on common dolphinfish (Coryphaena hippurus Linnaeus, 1758) from Philippine port landings highlights the need for baseline biometric data to support fisheries documentation and future length-based assessments. This study assessed the length-weight relationship and Fulton’s condition factor of C. hippurus landed at the General Santos City Fish Port Complex, Philippines, during the September 2025 sampling period. A total of 100 specimens were randomly sampled from commercial landings and measured for fork length and body weight. Fork length ranged from 53 to 127 cm, while body weight ranged from 1,028 to 9,690 g. The length-weight relationship showed a strong positive association between fork length and body weight and was described by W = 0.01853FL²·⁷²⁰⁶, with a Pearson correlation coefficient of 0.9833 and coefficient of determination of 0.9669. The estimated growth exponent of 2.7206 was significantly lower than the isometric value of 3.0, indicating negative allometric growth during the sampling period. The sampled fish had a mean Fulton’s condition factor of 0.551, representing the relative body condition of the specimens at the time of collection. These findings suggest that fork length can serve as a reliable predictor of body weight for C. hippurus landed under similar port-based sampling conditions. However, because the study was based on 100 port-landed specimens collected during a single sampling period and did not include sex identification, gonadal maturity assessment, stomach fullness evaluation, fishing-ground information, or seasonal sampling, the results should be interpreted as preliminary baseline information rather than annual, fishing-ground, or stock-level estimates. Further studies with seasonal sampling and biological assessment are needed to better understand growth and condition variation of C. hippurus in Philippine pelagic fisheries.
