Made of non-toxic resin,safe for all aquariums and fish tank.It can be put in fresh water and salt water tank. Authentic natural resin adds realistic beauty. It provides a beautiful and colorful decoration for your aquarium, and provide an excellent hiding place for fish. Provide a vivid sea environment for your fishes to swim and hide, add fun to your pets. The size is 5.8"x3.1"x4.7"(LxHxW) and 5.1''x1.9"x2.36"(LxHxW). Artificial Driftwood for Aquarium Decor Plastic Plant Branches Ornament for Fish Tank Decorations