What about food nutrients for your shrimps? and your water pH, Gh and etc ...

im sorry.. But what is LFS?

I tried the organic spanish at the organic shop...rinse with water and boiled them. put in the tank...shrimps didnt look at it nor eat...this morning saw 2 dead! aiyoooo

if young mama will be like 20++ shrimplets they will give birth to,else 20 to 40++ per mature berried mama.
They like to hide under decor , wood , stone and moss in your tank , but if you didn't prepare beforehand like covering your filter inlet, some will be sucked inside, if you are using canister filter , some may have survive and grow inside your canister filter which happen to me 2 year back when my inlet cover came off , i found like 30++ fire red baby grow to 0.5cm inside the eheim canister 1 mth++ later when i do filter cleaning.
So check your canister filter if you are using one cos the picture you post the shrimplets looked like more than a week old.

Total 13 shrimplets have been shifted into their new home. Expected to have more of them, checked water filter & sponge etc nothing inside, most probably eaten by Corydora. 

Well.. Only corydora and shrimps in the tank.

Only yamato and ghost shrimps proven to attack and eat other live shrimps.

Yamato is pretty useless, to clean up debris and normal algae , use neocaridina palmata variants or malaya shrimps is more potent minus
the risk of them killing other dwarf shrimps and stole all the food intended for fish/shrimps.

i got few yamato and cherry in the tank d..so far quite hard working.
Just need a few more cherry to build up the social group