Product details   CeramicNature crafts the calvus stone caves by hand in 2 different sizes. Calvus stone cave S 9 x 9 x 3.5cm Calvus stone cave M 12 x 12 x 4cm   The calvus caves are specifically designed for calvus cichlids, Altolamprologus calvus. During breeding, the female utilizes these caves by depositing eggs…