Ceramic Multi-Function Pipe Set L - Aquarium shrimp spawning breeding cave Tank 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:4.6" X 4.3" X 4.3" (11.8X 11X 11cm) (L x W x H )