Fish Can Do Math? Scientists Show Their Ability to Add and Subtract
Researchers in Germany have found that cichlids and stingrays are both able to recognize and calculate small quantities without really having to count them they say it's sort of like a person looking at their change on a table.
Researchers in Germany found that cichlids and stingrays are able to recognize and calculate small quantities without having to really count them, just as people look at their change on a table.

