This is what I used.
Sardines
Tuna
Shrimp
Green Pepper
spinach
peas
a little carrots
a little corn
romaine lettuce
a can of flake food
It made a ton of food and I got to test it out on my pond fish seeming that I made it at home and the intended recipiants of the food are in my college dorm.
I know fish talk to each other some how. When I first put the food in to the tank all five pond goldies ignored it. I was getting kind of sad, all that work and they won't even try it
Well, one of them must have sensed my anguish because not a moment later he gulped one of the bigger pieces
My fish in the dorm just dove into it, I guess because I went away for two days and they didn't have any food so they were super hungry.
But anywho, my fish loooove the gel food. The pond fish liked it so much that my mom decided she would give them some once in a while in addition to thier sticks.