painter`s mussel, unio pictorum, medium-sized freshwater river species, aquatic bivalve mollusk, biotope aqua

adaptable adult animal aqua aquarium aquatic background biotope bivalve blur clear closeup coldwater decorative detritis endemic eurasian european fauna fish fishkeeping freshwater gravel hobby litter live local macro mediumsized mollusk mussel native natural nature painters photo pictorum river sand shell species specimen substrate tank temperate underwater unio unionidae valve view water widespread wild yellow