They do not swim, although I have a current through filtration and an air stone. All they do is either float on the water surface, stay at the bottom of the tank, or stay in the corner of the tank.
Miukada 5lb River Rocks, Pebbles, Decorative Polished Gravel β Natural Mixed Color Stones
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π Spectrastone Shallow Creek Regular: Enhance your Freshwater Aquariums with a 5-Pound Bag
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