What do baby praying mantis's eat?

Praying Mantis babies eat small bugs, that are alive. You could use aphids, small flys, fruitflys. If it helps, hold the insect with tweezers in front of the mantis. Make sure the babies have water within 12 hours after they have hacthed, or they WILL die, no matter what. Try using a damp cloth or sponge. Also, if you have more than one Mantis baby, they will probably eat each other if they are not well fed.