Those don't look like Socolifi's. They would have black edging to all their fins.
They look like Cobalt Blue Zebras. I wish I could find those here! Nice blue addition!
Do they look more like this?
Species Profiles -- Cichlid-Forum
These are Socolifi's. See what I mean about the edging? I had a couple but they were too aggressive in my 30 gallon. Now that I have more room I cannot find any to replace them. Even at 2" they had the black edging.
Species Profiles -- Cichlid-Forum