Wow, Tanya!!! Really good pics! The first one is interesting, but the second and third ones are really something. In the first aquarium pic, I can understand why Nakis thought it was a reflection off of the tank, since the tank is glaring brightly. The bright glare of the tank must have been it's own internal light. However, in the second aquarium picture, the tank is not only dark within (after you turned the light off), but the flash did not seem to bounce off of the tank. If the mist was caused by a reflection or glare of the flash from the tank, there would be at least a flare of light on the side of the tank. I don't see anything that suggests to me that the flash bounced off the side of the tank. I could be wrong, but this is just what I observed. Also, the mist is brighter when the light in the aquarium is on, suggesting that maybe the tank served as a kind of backlight for the mist, as well as the flash illuminating the mist with even more light from the front side in the first aquarium picture. It might have been interesting to snap a 3rd picture withouut a flash.
Anyway, these were really interesting! =)