Morphometric comparison of Osteochilus spilurus (Bleeker 1851) from Bangka and Belitung Island, Indonesia

Abstract

Osteochilus spilurus is a low economic value freshwater fish in Sumatra, Kalimantan, and the Malay Peninsula. The trade for consuming identified in Belitung island. There is no study-related to their morphological characters of the Bangka and Belitung islands. In this paper, O. Spilurus was investigated the character adaptations in different exploitation and geography separately by morphometrics and landmarks. O. spilurus from Bangka and Belitung island found to have a significant difference in eight morphometric characters: head length, head depth, snout length, pre-ventral length, body depth at anal, caudal pundacleqa depth, dorsal base length, and anal base length. Symmetry and Asymmetry Geometric Data (SAGE) analysis found individual variation significantly. Morphometric changes that are not accompanied by meristic changes indicate a different process of adaptation to the environment due to the isolation of thousands of years of habitat.