Firstly; calm down take a deep breath (im serious) and re read your comment. Then read mine, its a hobby and we both only want to teach each other and other people, no need to be rude or anything.
Fish, is a very large spectrum you covered which I could give a lot of answers but in this case its a tropical fish topic so ill stick to a tropical fish for this:
Yes. They can suffer from "imprisonment" its the same way that if you only get one kind of a schooling or shoaling fish, they will die due to stress and "loneliness". For example the common corydoras catfish species, if you get one of these fish, and put them in a small say five gallon tank, they will surely die. in less than a month, easily. If your in the hobby and do not know these things, then I must say you haven't stepped ankle deep into the freshwater fish keeping hobby, saltwater fish are completely different physically and mentally. Another good fish that can show how your quote here is incorrect is the FlowerHorn, if kept in a smaller size tank than should be, is that not considered imprisonment?
My quote:
You act like I physically compared the fish to a human, with physical traits. and if you took it that way, well... like I said read stuff over again. You in this case can compare anything to a human if it is done right, within size of an area. For a rough example of what im saying;
Placing a blue powdered gourami in a five gallon tank, is the (Keyword here
@prawn)
equivalent to placing me in 10x10 ft room.
I am against the capture of wild fish yes, but I never got into detail about how "much" I am against it or anything. In my opinion, its just not right to some circumstances but if done properly I have no issue with it, and most hobbyist catch wild fish all the time (especially in india) and I have no problem with it, because they do it right.
Hope maybe you learned something from this
Nate