I have a few if these and two of them are different colors. These can be a little invasive as they root all over the place. I think they call them Mothers of Thousands or something like that. One of my plants is like yours and seems to grow tall and spindly. Another one I have is a light green and had a thicker stem.

This looks like the regular form. The other is variegated which is why they get pink.

Icadena

You are correct, Mother of thousands...(or millions or even gazillions :). It's like if you get 1 plant, you'll be finding new plantlets forever.

In warmer climes they have become invasive weeds. Unfortunately, from what I have read, seems they are toxic to most herbivores like cattle and horses. (Wonder about goats? Those critters seem to be able to eat anything without ill effect.)

Pink Butterflies is not a stable variegate. It always reverts back to the simple green common form. Growers know this but sell it anyway, sigh.