"I have a few guppy fish and one female had babies, the baby fry wouldn't eat crushed up flakes, so the a Petco person told me to try this special First Bites, which is what the baby fry eat, and you know the baby guppies eat it up alot. The only bad thing is I feed them several times a day like I was told to get them to get big and strong faster, anyhow it floats down to the bottom of the tank and makes the water dirty. But I would recommend it to everyone who is thinking about raising baby fish."