Well there are baby Ghost shrimp, maybe 4-6 I think I saw. They are not "grass" shrimp (like Cherry shrimp) and their bodies are angled sharply like a commonly seen Ghost shrimp. So perhaps in the areas of gathered shrimp where they came from, these and a few other people mentioning having babies, are suited to either kind of water, brackish water. I find it fun and very unusual.
These babies are smaller than the original shrimp I added to the tank so I know they are new ones.
Also unfortunately in over feeding.... OOPSY, there are seemingly hundreds of teeny tiny snails - not an exaggeration really, maybe a thousand, yikes! Looks like they are ornaments on a moss Christmas tree - and the other plants and glass and substrate and rocks. OH my.