My fish won't eat them, I was feeding them NLS for a while with constant hassle. All but like two of my fish will not eat them. I soaked them in garlic, tried smaller sizes and fasted for a week and a half if not longer to try to finish out my bottle. After fighting them for a month to eat NLS, I gave up. I feed mostly frozen (at least 5 days a week) because it's simply easier for me. I drop a cube and a half of daphnia, and crush up two gel cubes of Ocean Nutrition formula one and feed the mixture across my tanks. It takes me less time to thaw my frozen than to find, measure and feed 6 tanks at differing measurements.
Plus with so many fish at different sizes, I'd need at least 4 different pellet sizes or have to expend extra time I don't have in the morning crushing pellets for my micromouthed fish. I'm always looking for an alternative to the flakes I'm feeding now, but since my fish will not eat the recommended pellets, I turned to frozen.
I expend more money than I care to mention on fish food xD