My cats definately recognize and prefer me over others. My adult cat even knows the sound of my truck parking in the driveway, people who are indoors when I park in the driveway observe that he races to the front door and starts meowing, but won't do that when others do the same.
I don't think fish recognize specific people, but they do recognize that people are equal to food. Some people on this forum say that their fish hides from everyone except for their owners, so even that might be debatable.
I don't think fish recognize specific people, but they do recognize that people are equal to food. Some people on this forum say that their fish hides from everyone except for their owners, so even that might be debatable.