Dr Pomerleau insisted there was nothing fishy about his claim, saying anyone can teach their pet to perform similar tricks.
"There is mounting evidence that fish are more intelligent than people give them credit for," the fish training expert said.
"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."The two-year-old fish has been called the world's most intelligent goldfish