One type of experiment rests on the ... The researchers expected that a happy, optimistic fish would open the new box immediately, while a sad fish, they thought, would be likely to assume the ...

The blobfish, scientifically known as Psychrolutes marcidus, is a foot-long deep-sea fish that inhabits the waters off the ... the blobfish appeared to have a grotesquely sagging body and a comically ...

the researchers then used a prism to invert the face of male fish either vertically or horizontally, and tested how well females dealt with each type of inversion. Surprisingly, the fish showed ...

He said large fish in aquariums also thrived on human interaction. "Just people going past the exhibits is a form of stimulation for these animals," he said. "They like watching faces, the ...

Only one type of box contained food ... The researchers expected that a happy, optimistic fish would open the new box immediately, while a sad fish, they thought, would be likely to assume ...