A fish tank can bring an element of nature indoors and is a proven method for reducing stress. Reap these benefits while enhancing your living room decor. Many people get creative with fish tank decoration ideas when they want to turn an ordinary aquarium into something they are proud to show off. There are several fish tank decorating ideas for you. And for example; natural fish tank decoration. Driftwood, both natural and artificial, comes in many sizes and provide good cover for fish. Replicas of coral and coral reef structures are also decorations that allow fish plenty of places to hide and swim inside. Fish tank rocks and caves are designed to look like naturally-occurring rock formations and add landscaping interest to an aquarium. Plastic plants are useful in both natural and themed fish tanks, helping blur the lines of ceramic pieces.