Characteristics of Habitat and Abundance of Kijing Clams (Unio pictorum) in Pengambang River, Rumbai Pesisir, Pekanbaru. This study aims to analyze the habitat characteristics and abundance of the freshwater mussel Unio pictorum in the Pengambang River, Rumbai Pesisir District, Pekanbaru City. The research was conducted from April to June 2025 using a survey method with 1 × 1 m quadrat plots a…