if the pix have not been manipulated, does not appear a body will have much trouble spotting the GMO salmon.
if your fish place has - as seasons go - wild caught and farm raised, there is a distinct color difference. the farm raised is much paler - even after the marigold ‘color added’ thing…
the pix I’ve seen of the GMO stuff looks closer in color to wild caught/harvested. so I’m thinking, if it’s farm raised and brilliant color, it’s a fake…