Fish food was pretty easy, but am still gonna play with the recipe a little....
Just put some dog or cat food (dry) in the blender, and powderize it. Then I added some kelp powder, oatmeal, 1 small packet of unflavored gelatine, 1/2 can of peas, 1/2 can of spinach, 5 shrimp (Boiled) and some of the water that the shrimp boiled in, to make it really thin.
Pour it into a glass 9 x 13 dish (glass worked better than a cookie sheet for me) and put in in a 200 degree oven for about 45 minutes. It dries out, and begins to crack. Let it cool, scrape out with a spatula, and store in any container. I re-used my old fish food container.
You can also freeze-dry this...but it took too long for me to do it that way.