though they were fresh water shrimpYou will see the eggs - they gather them underneath their legs. they will lay eggs whether you have males or not but obvioulsy they wont be fertilized and also they wont hatch as they need to be transferred to salt water.
so if i put the ones with eggs into a small tank (brackish)the eggs might hatch? do i need a heater in.They are, but they lay the eggs in saltwater ( or strong brackish ) where they hatch and eventually return to fresh. One of my females is always loaded with eggs. I expect the fish or the other shrimp eat them when she drops them.
thanks honeythornI couldn't say. I've never bred them myself ( I haven't the time )
I think Cherry shrimp breed quite well in freshwater if I'm not mistaken .

You could try red cherry shrimp they breed like rabbits and the fry is quite easy to raise (a few people on here do it I will start hopefully next week just need to get some of them first lol) They are suppose to tolerate lower temps and they are relatively hardy as shrimps go.

