Bacter AE for fry?

[CalmedByFish]

Bacter AE is a food intended to feed shrimp - particularly the youngest shrimplets. It's a dry powder. The container says it "adds important microorganisms... and improving the development of biofilms."

Would that provide nibbles of food for livebearer fry? 

Any risk in trying?

[Tihshho]

BacterAE can overload a tank quickly if used too much. I'd be careful with using it with fry. Not all fry are equal, so biofilm might help some, but it won't be helpful for all. 

If you're looking for something decent for livebearer fry I'd stick to fresh baby brine for something live, and if your looking for an off the shelf food Sera Rearing Food is a good option. Sera Micron might be too small as it's a powder, but that would be another good option.