July 7, 2016, Tokyo, Japan - Goldfish swim in a fish tank during a press preview of an art exhibition &quot;Art Aquarium&quot; in Tokyo on Thursday, July 7, 2016. The exhibition, designed by aquarist Hidetomo Kimura, will be held at Nihonbashi Mitsui Hall from July 8 through September 25.  (Photo by Yoshio Tsunoda/AFLO)