https://www.chewy.com/education/fish/general/tiny-foods-for-small-fry
Once fish eggs hatch, the real challenge of breeding begins - raising the fry. While getting fish to breed is one thing, keeping their tiny offspring alive is often much more demanding.
Some species of bigger fish breeds and livebearer’s fry are usually large enough to eat commercial fish food right away, while most other species need much smaller, more specialized food.
Adding to the difficulty, many fry will only accept live, moving food in the beginning. There is a short window to transition them to non moving food before their survival is at risk. If you can successfully keep them alive through this critical phase, they usually adapt to flakes and other commercial foods as they grow.
Chewy editorial team provides an overview of popular fry foods that aquarists use to help young fish thrive. Each of these options offers the essential nutrients needed to raise fry, but using a mix of foods will better satisfy their varying needs and appetites.
It can be disheartening at times when fry are too tiny to eat the food you have on hand, but with a little patience and care, you can find or create just the right nourishment to guide them through these fragile early days. That small effort can make all the difference - helping them grow strong, healthy, and ready for a full life ahead.