The representatives of three animal classes are displayed: fishes, amphibians and reptiles. The collection contains more than 7 thousand exhibits. The exposition contains about 500 exhibits. The most impressive exhibits are coelacanth, Atlantic sturgeon, swordfish, Indian python, caecilian, the only specimens of common sole and European hake caught in Lithuanian waters, sea turtles and crocodiles included in the IUCN Red List of Threatened Species.