Yeah, I have that first bite stuff, its like sand! It doesnt sink very well though, and only the babies at the top were getting any because the other fish liked it too, although im sure it would be perfect stuff for fry in their own seperate tank, but since mine are swimming with the big dogs, they dont come up to the top that much when they were smaller. They do eat that stuff though, but it is hard to portion right, even a little dab looks like not enough, and then when it goes in the water, its like triple the amount LOL. Anyways, I have been giving my fry crushed flakes, first bites, frozen bloodworms, beefheart and brineshrimp since day one, as well with some greens (veggies that I feed my reptiles, they dont eat it though I dont think) and they seem to be growing SO fast! They are bigger than the fry at the petstore that were born like 2 weeks before mine, well maybe not bigger, but same size at least.