Dita Wisudyawati et al. 2026. Bacterial Abundance and Identification in Recirculating System of Sumatran Barb Fish Rearing Media with Duckweed as Biofilter. Grouper. 17, 1 (Apr. 2026), 143–153. DOI:https://doi.org/10.30736/grouper.v17i1.409.