that plant looks a lot like micro sword (Lilaeopsis novae-zelandiae or something in that family). i've got some of that and some of the narrow leaf pygmy chain sword. i just put it in about a week ago in a couple different tanks, so i don't have any progress to report, other than the clowns in one tank keep digging it up. they wait until i replant it and then go to work rooting around at the base of it.