Almost all Vieja look similar when young, and from those shots, its not possible for me to discern.
Just for reference here's a young V. melanurum.
now a young bifasciatta
Here below young breidhori
fenestrata, zonatum, and hartwegii also look similar at that age, but when I had them, is before I had a descent camera so I don't have pics.
I tend to be leary of LFSs that don't post full scientific names, because ofallthe hybrids these days.