When a Japanese aquarium closed for a six-month renovation project, a sunfish named Mambo stopped eating and began rubbing up against the side of its tank. Aquarists wondered if the creature was ...

Fish have feelings too – at least if a lonesome sunfish in a Japanese aquarium is anything to go by. Animal caretakers at the Kaikyokan in the southern city of Shimonoseki were concerned when Mambo ...

Most sunfish spend their days swimming slowly through the world’s oceans, feasting on jellyfish or soaking up the sun near the water’s surface. In the wild, these behemoth creatures—which can tip the ...