Lawnmower Blenny full

[Canadbis]

So I got a lawnmower blenny a couple weeks ago and it hasn't stopped eating since I put it in. I'm not really complaining, its more of a concern.
Can it eat itself to death? I mean it looks like a marble with a tail!! and wont stop eating. The other fish at least seem to take a break from eating once in a while but not this thing, it just keeps going and going.
So what do you think?
OH and it poos like no other!!