The one at the back has dark fins no? Is that a phoenix too?
This is harder than I think, to identify a baby fish ?May not mean much but it seems the snout-tip-to-eye distance is noticeably greater and there is a noticeable indentation in the profile line of the skull / snout on the dorsal side above the eye in the fish in question vs shorter distance and smooth line in Ken's photos.
The short eye to snout tip distance in phoenix is one recognizable trait, seemingly at all ages.