I can't say if they will be eaten without knowing what else is in your tank. I'd guess you have 3 days to get a hold of something. Maybe your LFS has some algae you can have. Lol.
Well for now I have 4 ghost shrimp but I'm considering taking them out because I feel like they could eat the shrimplets. I have 2 amanos and 4 adult blue diamonds and 2 african dwarf frogs in a 10g. And yes, I know the frogs are a threat to even adult shrimp but I'm just going to see if they can coexist in my tank. If I find my frogs hunting my shrimp I will definitely have to move them. But otherwise, I wouldnt think the frogs are much of a direct threat to the tiny shrimplets due to their poor eyesight..but we'll have to see.
Although I do have a bit of algae growth in my tank! Perhaps they'll stumble across it. But also I dont have a filter intake sponge

I hope they dont get sucked up into the filter lol
One of my adult blue diamonds is also berried. Is there any extra precaution I should make with that? I made a quick makeshift 'breeder box' for the shrimplets until I get a sponge intake cover. Not sure if its necessary but there are 6 shrimplets and I'd like to give them the best chance possible.
But I noticed they like to cling/hide on plants and such. The shrimps did come with a small bundle of plants that they are currently clinging to as I'm acclimating but it has quite a few types of algae growing on it and I don't want to introduce it into my tank. Should I put some plant clippings from my own tank in the breeder box? I do have a lot of salvinia minima so would that be enough for them to climb on the roots and eat some of the film on those?