Specifications: Model:ST-210 Size:9x6.5x6.5cm Material: ceramic Features: Provides spawning, breeding, hiding, playing and resting spot for aquatic pets. Made of ceramic material that possess filtration function for aquarium and fish tank. Create a natural and living environment for fish. Suitable for fresh and salt water. Breeding cave specially designed for breeding fish. Also as a practical decor for aquarium landscaping. This aquarium cave provides visual interest for you and your fish. Holes provide a space to rest, or reducing stress and aggression. The color difference may exist due to computer monitor display. Packing includes: 1 X aquarium cave