Zebra mbuna (a species of cichlid fish) and stingrays can add and subtract one from the numbers one to five, according to a study published in Scientific Reports. The findings highlight that the ...

In the second-largest lake in Africa, fish evolution is taking place at an explosive rate. Why? Scientists are diving into the question Ben Crair Lake Malawi formed in a valley where the African ...

Their poor memories mean fish are often seen as the dunces of the animal kingdom. But a new study suggests that view may be a little misguided because stingrays and zebra mbuna have been found to add ...

Scientists believe stingrays and zebra mbuna fish can do simple maths involving addition and subtraction of numbers between one and five. It follows a study at the University of Bonn, in Germany, ...