I'd wait and see what the fish developes into before assuming they are strigata based on a 'stocking list'. Unless Big Al's always gets there pikes from the exact same source and one has already seen what these pikes grow into as a mature adult(?).
Once it transforms into it's adult coloration, then it will be obvious wether it's a venny or a strigata. Juvies of these 2 species are really not distinguishable.