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¹ Muğla Sıtkı Koçman Üniversity, Ortaca Vocational School, Department of Aquaculture, 48600, Muğla, Turkey DOI : 10.4194/1303-2712-v15_4_09 Viewed : 5579 - Downloaded : 5832 This study aimed to determine whether the Asian clam (Corbicula fluminea Müller, 1774) can be used as a biomechanical filter in ornamental fish aquariums. Various densities of this freshwater mussel were maintained with goldfish (Carassius auratus L., 1758), and their filtration efficiency, tolerance to environmental stressors, and viability were examined over 75 days along with the growth of both the mussels and fish. The addition of mussels removed large amounts of total suspended solids from the water, improved the quality of the water, and led to enhanced growth and feed conversion efficiency of the goldfish. Furthermore, the polyculture of fish and mussels in the aquariums did not have any negative effects on the viability of either species. Keywords : Gold fish, Carassius auratus, water quality, freshwater mussel, Corbicula fluminea