My favorite food to feed my fry at this stage is repashy super gold.
Baby fish fry food.
Spread fish out on sheet bake at 100c or 220f for 5 minutes stir around and let dry for 5 minutes then bake again for 5 minutes.
Most fry begin life eating microscopic organisms such as tiny crustaceans and algae then move on to larger items like insect larvae.
Some species can be ready for larger foods in a matter of weeks.
2 months to 4 months.
Unfortunately i learned this the hard way when i made my first attempt at breeding betta.
Hang it in the tank and the fry will feed off it.
May repeat one more time or until the fish is hard enough to stand the following stir frying.
It can take several months before your adorable little goldfish fry start coloring up you ll also be able to notice more defects as the fish get larger.
Once they start growing you can increase the size of the fish fry food accordingly.
In a small pan add oil to stir fry garlic and leak slowly till yellowish brown.
Stir in salt and fish to finish.
Hard boil an egg take the yolk and wrap in a small piece of gauze compressing it so small portions protrude through the cloth.
The best food for the tiniest little fry in my opinion is walter worms banana worms vinegar eels etc once the fry grow a little larger then you can feed a food like first bites.