Another story on the research about fish and their amazing intellect. 
 
While your pet fish may appear to be oblivious of your presence, chances are it knows you extremely well and can probably even identify you from a crowd of human faces! At least, that is the conclusion reached by scientists the University of Oxford in the U.K. and the University of Queensland in Australia, following an extensive study of the archerfish, a species of tropical fish that can be found all the way from India to Indonesia, the Philippines, and Australia.
 
https://www.dogonews.com/2016/8/19/surprise-your-pet-fish-may-be-able-to...