The colouring is certainly of a really young baby fish before it takes on even it's "child" colours very reminiscent of jurense or even tigrinum but imo the whiskers suggest very young filamentosum or capapratum.
The video is poor and I can’t say what the fish is from it. IMHO though, I would be very surprised if the two were really the same fish or even same type of fish. Behaviour seems much more jumper cat than brachie.