Notice something fishy about this picture? That’s because AquaVista’s 500 — a self-contained, wall-mounted aquarium complete with built-in filtration and lighting, plus air pump and heater — hangs in your home like any other portrait. Simply pick a color, background, and frame. An integrated LCD panel makes controlling the svelte, 4.2-inch-thick gizmo easy, guaranteeing your interior decorating plans will go swimmingly. $399. — Scott Steinberg