scooters gone?

I have a question hoping to get answered..Ok among other things in my tank i have 2 rock flower anemones,lately i have noticed my scooter blenny hasnt been looking to well..when i went to check on it yesterday it was no where to be found ive torn everything apart and cant find it anywhere..My ? if it is in the tank what kinda damage can it do to my tank..i have several zoos button polyps different mushroomsand a few other things and is it possible one of the rock anemones had a snack..any feedback would be appreciated.thanks

 

What size tank is it.....and how old?

 

i couldn't find mine niether but i turned the light off for a while then on again and he came out in like 10 mins but those guys ae good hiders.........sneaky little boogers

 

Its a 40g ..i had a 29 upgraded to this one about 6 months ago..used everything from the other tank in this one..it was set up for 2 years ..but it was a fish only tank until recently..bought a fish it got sick and killed everything that was the reason for the upgrade..tested this am everything good.Ive been told my clean up crew might have taken care of it but dont have one..just a bumble bee snail and alot of pods..never had any problems with it as far as it getting dirty or algea build up pretty spotless..

 

The anemones would be my first suspect.

 

how big are your rock anemones? Mine gobble up whatever falls into them and cant escape ie afew good asized shrimp and could certainly do away with a small scooter. Also scooters are prone to dissapearance as puffer_lover said, as theycan feed off pods alone in a mature system. Gives em the ability to hole up for weeks. I'm not sure if water quality would take a big hit form a small scooter ina 40, i doubt it. I wouldnt stress over it too much regaurdless of what happened to him as i dont think he'll really affect the whole tank.