The Pack of 2 Stone Hideaways offers visual interest to your tank while reducing fish stress. This 2 piece set has the realistic look of granite rocks with their rounded shape in shades of black, grey, and white. This aquarium ornament serves two purposes, to add visual interest for humans but also acts as a hideaway and pass-through for your fish. This can help when more than one fish is present in the tank allowing them to play, rest, and hide inside, reducing aggression. These granite stone replicas are perfect for cichlid tanks since this fish is territorial and must create their own space.