The aquarium houses an impressive display of fresh water fishes (grammar sidenote: "fishes" is correct when talking about many fish from different families) unlike anything I've ever seen. Usually aquariums do salt water fishes as they're more colorful and more widely known about by the general public. I find this sad as fresh water fish, especially Amazonian and African species, are particularly lively and have actual personalities. I digress.
Anyway, the museum is small and nothing like the Georgia Aquarium, if you've been there, but fun if you're looking for an unusual afternoon. In addition to the fresh water exhibits, there are a bunch of salt water tanks, for the colorful fish lover in all of us. The museum also has a variety of alligators, including a large pair in a central holding pen. A lot of the fish were not terribly well identified, but there are guides wandering about to help satisfy your curiosity. Please check out the Redtailed Catfish. He's beautiful.
Palais de la Porte Dorée
293, avenue Daumesnil 75012 Paris
Metro: Porte Dorée
Adults: 5,70. Kids: 4,20