i am not sure the fish see so clearly beyond the walls of glass - their eyes are for seeing through water, not air, just as our eyes are for seeing through air, not water.
...on the other hand, considering the fact that we can see into the water thanks to the glass, i wonder whether they can see into the air thanks to the glass.... I am really not sure about this -
but what I can tell you is that fish have no brains. The upper encephalization of fish is not quite what it is in humans - they have a neural net, but not a developed brain. What is outstanding is that many fish have personalities, considering the fact that they don't so much have brains.....
So when they see you naked, or any of us naked, the probably think...
FOOD??????? We getting FOOD???????? FOOD FOOD FOOD FOOD FOOD -
oh. he going. no food.
just keep swimming, just keep swimming, just keep swimming.....