Have to agree with new world,even young u can tell pelligrinni from stiendachneri once you have seen them in person,most have never seen pelligrinni in person so its hard to tell.
they are rare,i believe there are only a few of us on here who actually have them,myself,newworld,and a few people i sold to at the aca.
I have a breeding colony and the next time they spawn i will be glad to send you a few fry,just keep in touch an i will keep you updated.