Do blue mystery snails eat live plants ?

Question

and how big do they get

Answer 1

Mystery snails (Pomacea Bridgesii) are one of the few snails that are least likely to eat live plants, although there is always a chance if you do not feed them regularly. They generally reach about 2.5 inches in diameter, and only their shells are blue as the body color of all mystery snails range from white to deep yellow.

Hope that helped =)

Answer 2

There shell is a lighter blue and the body is a darker blue. They will not eat healthy live plants, but they will eat unhealthy dying plants. They get the size of a golfball.