We put up a small pond on our back porch and on Sunday went to purchase some plants for it. The place we went to had many fish, beautiful koi that costs into the hundreds of dollars. I loved them but wouldn't spend that on something I ate let alone would but in a pond, so we ended up getting two comets and at another place found a baby golden koi for $5. We grabbed some food and when I went to feed them my suspitions proved out, the first ingredient is wheat. So please be careful if you have fish, most fish food contain some gluten products.
Interesting enough I found out that my fish will eat oranges, watermelon, cantaloupe, lemons, grapefruits so I will have some fun in feeding these non Gluten foods to them.
If you don't believe it, take a look at this