Quote Originally Posted by WAbedroomponics
ground corn, ground wheat, calcium carbonate, soybean meal, soy hulls, wheat middlings, di-calcium phosphate, fish meal, animal fat, coconut fat, natural and artificial flavors, L-lisine HCL, choline chloride, salt, DL-methionine, ascorbic acid, Vitamin A, biotin, hydroxocobalamin, cholecalciferol, menadione, niacin, riboflavin, thiamine HCL, calcium pantothenate, pyridoxine hydrochloride, folic acid, sodium selenite, cobalt carbonate, magnesium oxide, ferric sulfate, copper sulfate, calcium iodate, manganous oxide, zinc sulfate, zinc oxide
I forgot if you mentioned you had Tilapia, but I am assuming you have Tilapia or some kind of omnivore.

LEGEND
Italics - OK
Regular - Unchecked
Bold - Harmful in some way
Underlined - My best guess is safe
ground corn
ground wheat
calcium carbonate
soybean meal
soy hulls
wheat middlings
di-calcium phosphate
fish meal
animal fat
coconut fat
natural and artificial flavors (obviously can't really tell this one

L-lisine HCL (should be safe, but can't find reference, humans take it)
choline chloride
salt
DL-methionine (in dog food and humans take it)
ascorbic acid
Vitamin A (not specifically stated, but in all likelyhood ok)
biotin
hydroxocobalamin (how many forms of B12 are there!!!)
cholecalciferol (vit D3)
menadione (vit K should be fine)
niacin
riboflavin
thiamine HCL
calcium pantothenate
pyridoxine hydrochloride
folic acid
sodium selenite (some of this stuff must be good for geckos I guess, low toxicity in humans, gonna OK it)
cobalt carbonate (high toxicity in humans, can't reference MSDS: http://msds.chem.ox.ac.uk/CO/cobalt_II_ ... drate.html)
magnesium oxide
ferric sulfate (high toxicity in humans, can't find this anywhere, maybe harmful http://www.sciencelab.com/msds.php?msdsId=9924046)
copper sulfate
calcium iodate
manganous oxide
zinc sulfate
zinc oxide

To make this fast, I am cross referencing the following:

Purina Mills Aquamax Grower 600

Also, this page full of possible examples

The ones in BOLD I only marked as harmful because it is harmful to humans in any large quantity. I realize we are evaluating the fish and and the nutrient in trace quantity. The substances could metabolize into something entirely different for all I know or even be required by human nutrition in trace quantities. I urge you to further research those substances. As we don't eat geckos, it's hard to say if the food is safe for raising livestock for human consumption or not.