largest aquarium in Denmark, located in Charlottenlund, outside of Copenhagen. It is noted for its collection of unusual fishes. Included among the more than 3,000 specimens of nearly 200 species of marine and freshwater fishes are lungfish, blind cave fish, mudskippers, and the primitive paddlefish from the United States. The aquarium also has some noteworthy exhibits featuring such marine invertebrates as sea anemones and octopuses.

Denmark's Aquarium was opened in 1939. It was expanded in 1974 to accommodate a set of landscape aquariums. The aquarium conducts research programs in fish physiology and parasitism that are supported by the Royal Danish Academy of Sciences.