Penn Plax South Castle Aquarium Decor This aquarium decoration features a large grey castle perched upon a rocky hill with a flowing waterfall underneath. The cone shaped roof, archways, and stone details give a realistic feel. This castle provides visual interest for you and your fish. Holes provide hideaways for your fish to rest and passageways to reduce boredom. This aquarium ornament measures 12.8 inches across by 14.8 inches high by 8 inches deep. Castle is doubled sided and can be placed anywhere in your fish tank. Can be used alone or coordinate this castle with style RRW9 Part A to create a large 2 piece underwater kingdom for larger fish tanks. Made of safe durable resin, this aquarium decoration is hand painted with detail and is safe for use in both freshwater and saltwater aquariums.