Ceramic Multi-Function Beeramid Shelter- Aquarium shrimp spawning breeding cave Provides natural like shelter.Great for bottom dwellers.Perfect for breeding. Material Ceramic 100%.Great shelter for plecos,shrimps, small fishes, baby fishes Design a natural living environment for the fish to shelter or to generate. Smooth surface can act as a breeding ground for fish. Measures approximately:3.1" X 3.0" X 2.8" (7.9X 7.7X 7.2cm) (L x W x H ).