Color Duration of Color Enhancing Foods

[Struggle]

Just curious if anyone has done any testing of how long the color enhancement from color enhancing foods last? One week, one month, six months? example adding redrum to your Repashy mixture or krill flake vs something else with out Carotenoids?

[GardenStateGoldfish]

I think this would depend on the fish your color enhancing to be honest. Not all fish colors are as stable, I am a goldfish guy and I think the sun or the container type may impact the goldfish color more, but I know salmon skin in foods is good for bringing out reds so look for "whole salmon" on the fish food or specifically salmon skin.