Twenty aquariums with over 35 m³ of water are spread over 150 m² and host over 300 samples of freshwater fish both from Croatian rivers and lakes and those of the rest of the world.

The sterlet
(lat. Acipenser ruthenus)

lives in the affluents of the Black and Caspian Seas, and grows up to 50 cm in length. It likes deep lowland waters, and feeds on larvae and insects.

The Japanese carp
(lat. Cyprus Carpio)

is an ornamental species of common carp with a specific colour, pattern and husk.

The pike
(lat. Esox lucius)

has a slender and long body, it is a very fast swimmer and dexterous hunter.

The crucian carp
(lat. Carassius carassius)

is a freshwater fish and lives mostly in calm, dense grassy waters with muddy bottoms.

The goldfish
(lat. Carassium auratus)

has been the best-known aquarium fish since the 18th century.