Sounds pretty good. I would include one or two more things in the next batch.
Nori is the stuff that they use to wrap sushi in, and is available in pretty much any big supermarket. It's excellent for fish (and for people).
spirulina is a type of cyanobacteria and is usually available at health food stores and co-ops. It's really high in vitamins, and is another healthy food for nearly all animals. You've only got to add a little of this stuff. It's pretty potent stuff (though, as far as I know, you can't really OD on it. Think of it as concentrated veggies)