illustration of yellow fish with red stripe down its back
Can These Fish Do Math?
Scientists find that two species can be trained to distinguish quantities that vary by one.
ABOVE: © ISTOCK.COM, ROBUART
Can These Fish Do Math?
Can These Fish Do Math?

Scientists find that two species can be trained to distinguish quantities that vary by one.

Scientists find that two species can be trained to distinguish quantities that vary by one.

ABOVE: © ISTOCK.COM, ROBUART

counting

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