Oh, sorry my delay. I didn't remember to have received a notification of replies.
My mistake.
Have you checked your water quality?
That is sad. Is she a young mom or have you had any babies before?
The water quality was good, I think, except for the hard water:
pH around 7.5
nitrites 0
nitrates < 20
(don't have a test for ammonia
)
kH around 15dKH
Unfortunately, this kH is what I get from the tap, I don't know yet how to reduce it, and actually I haven't found a good reason to do so.
Do you think it could be the reason for dropping eggs?
I ignored this possibility because those shrimp have arrived home just 5 days before that issue. So, I immediately thought they were just stressed. They are also living in a community tank with fishes, and they were a bit scared during the first days. Now they are fine
They somehow learned that those fishes are harmless to them.
So, answering your question, since they are new here, I don't know if she have had babies before.
Today I found another shrimp holding tiny eggs, but they were green, not yellow as those dropped ones. I need to research what are the stages of the eggs, to know better why different colors...