I have a small mantis shrimp in my nano

[daniella3d]

Hi,

a few months ago I found a very small mantis shrimp in a piece of liverock on a frag. I only had a 20 gallons tank then setup for quarantine so I put it in there and forgot about it.

A few months later, like 2 to 3 months, I set up a 15 gallons nano with 20 gallons sump and put the liverock from my 20 gallons in there. I never saw the mantis again.

But yesterday I saw it and it is about double in size. How big will it get? It was about 1/2" 3 months ago, now it is about 1". It is very hard to see because it hide in the liverock. I though it was dead because when I transfered the liverock I inspected it and I never saw the mantis!

I am just wondering with the rate of growing, from 1/2" to 1" in 3 months, will it become big or will it remain small? I would not want it to eat or harm my dottyback, is that a risk?

I could not take any pic, but it is a mantis for sure, 100% sure, since I saw it very well when I first got it. Here is a pic that show what it looks like: There is no mistake it's a mantis shrimp because of the eyes that protrude like on these pics: