Technicolor lights and 5,000 kingyo (goldfish) inside 70 aquariums made up the installation from 'aquarium artist' Hidetomo Kimura.
Kimura is the preeminent contemporary artist in the field of https://en.japantravel.com/places/tokyo/art-aquarium-museum/465, weaving the natural ecosystem of the fish with multicolor lights and geometrically-shaped tanks. Come nightfall, the lights dim, the colorful illumination amplifies the beauty of the goldfish and the art aquarium transforms into a music lounge, with live DJs performing every Saturday.