Question: is egg yolk good for betta fry?
Answer: Feeding Betta fry egg yolk. Well, it should be okay for the time being, like 1-2 days. However, the yolk contains fats and cholesterol which may not be good for the fry because they're based on terrestrial animal protein. The aquarium stores should sell fry food, or you can crumble and grind some flakes instead.