Lumpfish Close Up

An unusual grip keeps these fish clinging on for dear life

Stick to It
Kiyoshi Ota/Getty Images

Colorful balloon lumpfish grip equally festive party balloons at Tokyo's new Epson Shinagawa Aqua Stadium, home to more than 20,000 sea creatures in its aquarium.

Known to the Japanese as fûsen-uo, the_ Eumicrotremus pacificus_ is native to the cold waters off the island of Hokkaido in northern Japan.

The fish's underside features a sucking disk that allows it to withstand heavy currents by clinging to rocks on the seafloor.