There are many threads and posts here about stomatopod eggs and larvae. Try a search for them.
The quick answer is that they are probably not peacocks since O. scyllarus do not arrive as hitch-hikers. Also, peacocks don't breed until they are around 12 cm long.
Regardless of what species you have, you will not be able to rear the larvae through to postlarvae (which is when they settle). Once the eggs hatch, depending on the species, they will stay with the mother for from a few hours to more than a week. They will then become photopositive and swim up into the water. At this point they will have enough yolk to live another day or two, then they will strave to death, be fed upon (in a reef tank) or be chopped up in a pump. You can try to separate them into small containers, but they will have to be held alone since they are highly cannibalistic. For food you will need to give them live zooplankton (brine shrimp larvae alone won't cut it) and the water will have to be changed every day after feeding. Again, depending on the species, the larvae will stay in the water column for from 4 weeks to several months. Finally, if you have the correct substrate, they will settle out as postlarvae. In gonodactylids this is usuallly at around 7-9 mm. In peacocks, closer to 30 mm.
I know of only a hand full of cases where people have successfully reared stomatopod larvae and these were hardly successes. The last time I tried it I started out with over 100 G. chiragra larvae and ended up with two postlarvae that settled.
Roy
