Actually from what i know neither are tattooed. All the glofish, no matter the species are GMO. The peach, strawberry, fruity tetras, those are died. See these are died ones. Notice the color only does half way threw the fish. These one with fade back to the normal white skirt.
Glo white skirt, notice how the color is actually the fish. It is actually the color of the skin or scales.
From what i know non of the glofish are tattooed, they are all GMO. They started with the danios cuz it was easier. Now they are GM all different fish. Any tattooed fish will have names like this; painted (besides painted swordtails), fruit, tattooed, and well died.
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