The SLOCME Aquarium Medieval Resin Castle Decorations are perfect for any aquarium. These castles feature a medieval design that is sure to provide your fish with plenty of shelter and comfort. Made of a durable resin that is safe for use in both freshwater and saltwater environments, these castles are easy to clean and require no special maintenance. With a size that is ideal for most fish tanks, these castles are a great way to add some style and color to your aquarium.