I will gladly help you the best i can.In my opinion at first look it does seem to be a Rhipsalis Cereuscula. But let me try to get the person who IDed mine to take a look.can you post a picture of the whole plant? I can't see the middle of the pot.Is this how you bought it or did you root it or get pieces of one? It's a nice plant.Yours is definitely a lot further along than mine.
Have a nice day!!!
