Murano glass aquarium paperweight vintage blue opaline venetian selling glass sphere

This is a vintage Murano glass aquarium, hand blown in 1990 from a Murano Fornace where it was bought. Diametre of sphere is about 7.5 cm, height 9 cm. Vivid colors with four golden fishes inside. Real murano glass. It represents a scene with sea selling depths of shells and corals.