Really, there just seems to be no limit to the ridiculousness of pet store employee advice....
No, there aren't bloodworms in any pellet that I know of unless its something they don't list in the ingredients, which I highly doubt.
If you want to boost your betta's colors I would suggest simply making them happy. They're most vibrant when they're warm, safe, fed, etc. =)
As a food though, I'd definitely recommon a mix of Omega One pellets (small and easy for them to eat) and a live/frozen food like daphnia or bloodworms. Real food is very nutritious for them, though not too much since it's much more filling than a processed pellet. =)
Actually its the other way around; Aqueon pellets have more fillers then Omega One.
Aqueon pellets are OK, not the worst you could feed, but Omega One and New Life Spectrum are a higher quality brands and have less filler.
+1 again for Dragonfish.
Compare the ingredients of the three and you will find that the best is New Life Spectrum, Omega One is next and Aqueon is last. That is also in order from most expensive to least expensive.
Omega One and NLS Betta are the best pellets on the market. Aquaon pellets are wheat based which can lead to constpation. The "fillters" in Omega One are mostly a bunch of helpful vitamins... NLS is still my favorite.
Between Omega One and NLS, I have to say I'm definitely a bigger fan of NLS as well. I especially like how they include garlic, which makes them a little more enticing to picker bettas and I believe helps in preventing internal parasites.
And on the subject of price....honestly, though they may be on the pricier side, personally I think its worth it for the over-all health and well being of your fish to have a higher quality food for them. I shelled out the money for NLS finally after trying several different brands(including Aqueon and Omega One)a few months ago and never looked back, its wonderful stuff.
Aqueon isn't bad, but it's not good either. It's true Omega One is expensive, but it has less fillers than Aqueon. Once you hear something from someone, it doesn't always mean they're right. Always search it up first.
And for Omega and NLS, NLS is much better due to the fact that it has garlic in it and Omega seems to have wheat gluten. (commonly used filler) Also keep in mind that Hikari changed their ingredients. Full of fillers now than before.
NLS are my bettas favorite mass marketed food. I have tried a few samples of other pellets,the larger like Aqueon or...(sorry I don't remeber name but it was also developed woth a top betta breeder...his name is part of food's name...sorry I don't remember more)...anyway, I always ended up by fishing food out of ...especially the kind whose name I can't remember! None of my fish would eat these inferior pellets; the bettas would rather starve than eat these pellets
Now, my bettas eat NLS,, occasionally Omega One, and, lately, sam8ps earthworm of super 8 blend which I order through aquabid. Of course, over half of what I feed them are live white and grindal worms and frozen bloodworms w/occasional brine shrimp or emerald entree.