The rabbit-fish, Siganus sutor (Valenciennes, 1853) is reported for the first time

from the Mandar Bay, Sulawesi, Indonesia. The study was conducted on September

2005. S. sutor has been misidentified as S. canaliculatus or S. fuscescens because of

their body appearance and coloration. However, S. sutor can be distinguished from S.canaliculatus

and S. fuscescens on the basis of differences in number of scale row

above the lateral line and number and pattern of spots on body. Systematic characters

of the species were examined and then compared with the previous study.