Boto
The "Rio Negro" was opened in 2005, and is situated in the Tropical House. In a large pool lived the Amazon river dolphin "Baby" - which was the only of its kind in Europe. The pool was constructed to look almost natural, and is separated from the viewing area by a curved, meter-high glass plate. The house is decked out naturally with wooden flooring, much foliage, and uncaged animals. Previously, another dolphin also lived here; at the time of his death in 2006, he was the oldest known Amazon dolphin in the world, being at least 45 years old, but died and passed away in December 2020. The pool was not intended to be exclusively used for the Amazon river dolphin - the plans are that it will be used in the future by other species after Baby's death.