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FISH can do maths, scientists have discovered.
It was thought they may flounder in arithmetic exams — however they confirmed they may shortly work trout sums between one and 5.
They have been first educated to recognise that yellow symbols represented including by one and blues symbols meant subtracting by one.
For instance, in the event that they have been proven three blue shapes they might discover a deal with by including one to a few and swimming by means of a gate displaying 4 shapes.
They have been proper between 69 and 94 per cent of the time.
Maths means has already been present in gorillas, monkeys, dolphins, elephants, birds, salamanders — and even bees and spiders.
The newest exams have been carried out on freshwater sting rays on the College of Bonn, in Germany.
Dr Vera Schluessel instructed journal Scientific Stories: “It may assist them recognise particular person fish by counting their stripes or spots.”
Subsequent lesson — the decimal plaice?
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