Feeding Super Mealworms fish food's

that would work will. Just make sure the pellets are soaked through.

You should feed wheat bran and the occasional carrot or potato for hydration. It's much easier to sift through and separate the sizes. Just make sure to microwave any feed for 10-20 seconds to kill off mites.

Interesting idea, but why would fish pellets be correct unless the pellets are primarily algae? Mealworms are vegetarians. Shouldn't they need to be fed what is proper for them to eat, if they are to have the natural nutrients that they provide. I'm skeptical that feeding them pellets (if, for example, they are 50% animal protein) will make them more nutritious as their digestive system would likely destroy or discard what it doesn't need.

To get live food full of vitamins, I've considered using a syringe and liquid vitamins right before feeding.

The mealworms' digestive system will most likely discard anything that's not beneficial to the worm itself. They will however retain all vitamins and nutrients that they can absorb. Also, I think mealworms are more omnivorous as they are known to break down decaying meat and plant organisms. I noticed with my colonies, they are very lively for the first 24-48 hours after they are fed my nutrient rich mash but start to become more mellowed out after about 3 days. I also noticed that they are more active/lively when they feed on oranges or carrots compared to potatoes. Just my observation.