At this Tokyo museum, 30,000 goldfish become living works of art

In Japan, the goldfish is more than just a pet. It's also a symbol of peace, prosperity and luck, which is why more than 30,000 of them are being gathered together in Tokyo as part of an exhibition.

At the in Tokyo's Nihonbashi neighbourhood, the lucky fish are placed in glass aquariums in various shapes that are lit up with different colours - for example, a pink-lit lotus flower or a dodecahedral aquarium that produces a prismatic effect.