ZOOLOGISTS have conducted a detailed mathematical investigation into whether any two goldfish swim in exactly the same way.
The international team, drawn from three cities across the US and France, filmed five fish swimming under standard conditions. They then used six mathematical parameters to define their swimming style, including “Lempel-Ziv complexity” which highlights irregularity in velocity, and “characteristic fractal dimension”, a measure of the fish’s deviation from a straight line.
Their conclusion, which will come as a relief to pet owners who have started to wonder whether their fish have any personality at all, is that each is a paragon…
