This Betta Keeper Hex Kit makes a wonderful desktop or countertop display piece or create spectacular eye-catching displays by stacking several units. Ridges on the lids allow for stacking multiple small Betta Keepers or to mix with large Betta Keeper units. When in close proximity with one another, Bettas are stimulated to intensify their colors, spread their fins and flare their gills. Liquid volume: 24oz. Boxed with lid, gravel and plastic plant. 4”w x 5.25”h, Depth: 3.25”