Quote:
Originally Posted by Reef_Geek
the secret ingredient for colouring up fish is astaxanthin.
actually, it's not really a secret.
Flamingos get their colour from krill, many fish foods contain Spirulina, aquaculture uses salmon skin in formulated foods etc etc... I've seen FW swordtails fed so much of this stuff, you cut the fish and the flesh is bright red inside.
Try prolonged feeding using fresh macro-algae and/or make your own foods (search threads such as this one) and add lots of salmon skin. |
maybe it's not clear... but all those foods I mentioned, Spirulina, krill, salmon skin... all have high levels of natural astaxanthin, so long as they are fresh & raw.