Then you should specify non-human apes so we can understand what you mean.
I don't go to zoos, because I find them inhumane. But anyway, those in the cages would be chimpanzees, orangutans, gorillas, gibbons, bonobos, etc....all apes. Just like the apes that paid money to get in the zoo to gawk at them. All you have to do is go there and read the signs in front of these cages. You will find the species name on them. Find me one that says "ape" without any modifier under species and I'll concede my position.