I don't know much about this whole encryption within an image thing but I've read the whole thread so far and can't remember anyone mentioning if they had tried running the seemingly identical image found at:
http://www.australianseafoodexports....rderonline.htm (site)
http://www.australianseafoodexports..../moonfish1.jpg (image)
Was it only the FIRST released image that had these embedded encryptions, because if they were in both images it would probably rule it out as being anything meaningful.