Form factor of Japanese threadfin bream, Nemipterus japonicus (Bloch, 1791).‎

Abstract

Japanese threadfin bream, Nemipterus japonicus is a large-scale commercial fish found ‎in the Pacific and Indian Ocean. Form factor (a3.0) is used widely for comparison of the ‎fish body shape between geographic locations. The present study was aimed to estimate ‎the form factor of N. Japonicus from available literature based on empirical model. ‎Assessed a3.0 ranged from 0.0035 to 0.0270. The median (0.0143) and 95% confidence ‎limit (0.0130-0.0168) indicated that N. Japonicas poses the typical torpedo body shape ‎‎‘fusiform’. Findings on the form factor of N. japonicus will be effective for perceiving ‎further body shape alteration between geographic distributions.‎