Koji Sasahara, Associated Press
A woman looks at balloon lumpfish attached to balloons at Shinagawa Aqua-Stadium Aquarium in Tokyo on Tuesday. The colorful fish, commonly found in the deep sea near the Japanese island of Hokkaido, attach themselves to rocks in the water via a sucker disk on their underside.

A woman looks at balloon lumpfish attached to balloons at Shinagawa Aqua-Stadium Aquarium in Tokyo on Tuesday. The colorful fish, commonly found in the deep sea near the Japanese island of Hokkaido, attach themselves to rocks in the water via a sucker disk on their underside.