A US man has taught his pet goldfish to limbo dance under a bar.
Dr. Dean Pomerleau, 41, from Los Angeles, has also trained Comet to play football, basketball, fetch with a hoop, slalom around a series of poles and push a rugby ball over a set of posts.
He used a training technique called positive reinforcement to train two-year-old common goldfish Comet to carry out the tricks.
He said: "There is mounting evidence that fish are more intelligent than people give them credit for.
"With the correct tools and the basic promise of a food reward, fish can very quickly learn complex tricks - like the limbo, slalom or playing fetch.
"Now people in the market for a dog might want to consider a fish instead."