Flowerhorn tile colour substrate

[Magnus_Bane]

Not really sure. Pearls in faders are little different. I assume base color would have effect on pearls as well, that's why we see different colored pearls in different strains.

Wonder if anyone has ever done some extensive research into the topic of pearl colors.

 

[Ruturaj]

Wonder if anyone has ever done some extensive research into the topic of pearl colors.

It's tough to find research on it. Following might be helpful

FA192/FA192: How Ornamental Fishes Get Their Color

University of Florida, Institute of Food and Agricultural Sciences Extension outreach is a partnership between state, federal, and county governments to provide scientific knowledge and expertise to the public. The University of Florida (UF), together with Florida A&M University (FAMU)...

edis.ifas.ufl.edu

It covers how pearls appear blue or green.