Ceramic Aquarium Shrimp Shelter - Triangle Part # 1829
 
Size Approx - 7cm D x  7cm W x 7cm H /  3" D in x 3" W in x 3" in H
Entrance holes are 1.8 cm x 1.8 cm /  5/8" x  5/8"
Provides refuge and protection from predators
Can provide substrate for fine algae or bio-film
Seclusion for molting / female with eggs