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Salmon pink (media.kbin.social)
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[-] s_s@lemm.ee 13 points 8 months ago* (last edited 8 months ago)

Carotenoids are produced by algae, plants and certain fungi.

Feeding fish higher-level animals in the food web (like crustaceans or fish that predate on crustaceans) concentrates the carotenoids and brings out more and more color in the fish, specifically red.

[-] LuckyBoy@lemmy.world 4 points 8 months ago
[-] s_s@lemm.ee 4 points 8 months ago* (last edited 8 months ago)

Mercury is more highly concentrated in higher-level organisms in a similar fashion, yes.

But mercury itself has nothing to do with coloring.

this post was submitted on 14 Jan 2024
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