All Lysmata sp. shrimp (cleaners/common, peppermint, blood/fire, etc) are hermaphrodites (they have BOTH male AND female organs, although the younger shrimp function only as male at first). If you have two in your tank, you automatically have a pair & they'll both end up carrying fertilized eggs eventually.
They will normally molt every 14-20 days at which time will couple with another shrimp, storing the sperm. They're also able to store sperm for a lonesome rainy day so can have 2-4 viable batches of eggs even when alone in the aquarium.
After a few hours, the newly molted shrimp will produce eggs which are then fertilized with the stored sperm & tucked away in the swimmeretes under its tail. If the shrimp is alone in the tank & the stored sperm has been used up, the eggs will be infertile & eaten/abandoned by the shrimp.
At this point the fertile eggs are green in color, but lighten to an amber color then silverish as they're ready to hatch 14-20 days later. During this time, the adult shrimp cleans & aerates the eggs.
The larvae hatch after lights out & are the size of a speck of dust. Unless they're removed they just become food for the fish/coral/powerheads - they're much too delicate to survive to maturity if left in the main aquarium. There have been VERY few accounts of raising them to maturity as they go through 10 or so larval stages & require special/frequent feedings & pristine water. The larval stages up to metamorphosis to a juvenile shrimp takes approx. 40-60 days depending on the species.
I tried several times to raise L. debelius (Blood/Fire shrimp) & gave up. It was VERY time consuming & disappointing - none made it past the 5th larval stage.
HTH & didn't bore anyone to death!
RG
