This is what I have been told also. It may also be in a different useable
form.
A lot of other carotinoids are also in this product too but I'll
>have to dig further to find that info. When I have kept fish like adult M.
>parkinsoni out for the summer they have gotten quite bright in their
colors and
>have kept them throughout almost the entire winter (~ 6 months). I was of
the
>understanding that this product does keep the color on longer than just a few
>months. I guess some of my further work will see how this holds up with the
>bows. The powder can be fed to brine shrimp and daphnia.
I was told it could be fed to rotifers as well. I noticed the same thing
as far as color is concerned. The fish haven't faded yet and I am not
feedingthemthe stuff anymore...
MTF
Mach T. Fukada, Web Master
fukada at hawaii.edu
Honolulu Aquarium Society
http://www.geocities.com/Heartland/Meadows/2948/HASF.html