I like to feed my aquarium fish quality foods, and I think of Hikari Blood Worms as one of these foods. They are freeze-dried and come in a 0.42 oz container with a slide tab top, making it very easy to pour out the amount of blood worms you want to feed your fish. I give my fish blood worms several times a week (I feed them twice a day), and the fish seem to love this food. It is vitamin enriched, Bio-Pure, free of harmful parasites, bacteria and foul odor, and free of artificial colors and preservatives.
The container does state that allergic reaction to your skin is possible with this food, and to always wash hands immediately after use. I do this as a rule anyway, and I've never had any problems. The size container I use will last me a while, and as I stated before, my fish seem to really relish this food, which is important to me. The food is only good for them if they will eat it.
So for a special treat for your pet fish, Hikari Multi-Enriched Blood Worms is the way to go.