Smallest aquarium
The record for making the smallest aquarium was set by Anirban Aich (born on December 17, 1994) of Kolkata, West Bengal. He made the smallest aquarium (measuring 1.1cm x 1 cm x 1cm) using bris glass, silicon tube, rock, water and sand. It can hold up to one fish at a time, as confirmed on February 3, 2022.
