When Para is at 10-50% of it's health, it will replicate itself when it uses a TP move if not defeated quickly. It is helpful to save MP or TP to do large damage once it reaches low HP.
The first incarnation and all of its replications can easily be disposed of by most 70+ jobs.
Although no more than three to four copies seem to be up at a given time (there may be a limit), there is no known limit to the total number of times it can replicate itself. A reasonable source of spike damage is necessary for this fight.
The replications are exact copies with the same amount of Max HP and strength.
The NM seems to be around the same strength as Funguars in the area but with substantially more HP.