Wild-caught salmon is pink because of the krill they eat, so in a way it’s also a dye. Farmed salmon definitely has coloring added to get this effect, but otherwise the flesh itself isn’t naturally pink.
The color in the farmed Salmon is the same compounds as the wild:
https://www.dal.ca/news/2023/03/21/farmed-salmon-colour-heal...
The amounts differ, and the farm feed may be synthetic.
The color in the farmed Salmon is the same compounds as the wild:
https://www.dal.ca/news/2023/03/21/farmed-salmon-colour-heal...
The amounts differ, and the farm feed may be synthetic.