Front: fake label is little bit grey, darker blue and darker yellow font.
Back: barcode at the fake bottle is smaller and the recycle logo is only outlineBottle cap: original have some ring at the top
I'm not 100% sure whether it is really fake or just new packaging. I just take fish shop owner word for it. By the way, the fake one is $1 cheaper. I will try to email the company for further info.