This appears to be a real photo taken through a wide-angle lens. If you look at the water in front of the man, there is a lot of visible space. Also, the head of the fish appears to be turned toward the camera. The fish is basically being shoved into the foreground and made to look bigger than it is.
Goldfish do not have barbels. This would be a koi or some other golden carp.
Goldfish do not have barbels. This would be a koi or some other golden carp.