Do all blennys eat algae?

[jasonrusso]

I'm planning on changing my ways with the reef tank. I've learned that the corals were healthier and happier with the higher nutrients than with me dosing NOPOX and running phosguard etc.

With that, I aasume i will have more algae. My tank is a RSM C-130 (34 gallon). I would like a lawnmower blenny, but I would feel bad with a 5" fish in a small tank. I've been looking as some cool blennys that stay smaller, but will they clean up like a lawnmower?

 

[TriggerFinger]

I have a pretty small starry in a 29 and he seems happy. He goes for film algae on the glass and power head. Also really likes the small omega one sinking algae pellets.
Edit: he’s the only fish.

 

[Silver14SS]

Great pics! I have a Mollie Miller blenny, it is a very entertaining fish to watch. I'm not sure how its algae appetite compares to a lawnmower.

https://www.reef2rainforest.com/2016/08/03/molly-miller-blennies-for-aiptasia-control/

 

[jasonrusso]

So I read the black sailfin blenny rivals the lawnmower in algae appetite, and it stays smaller.

 

[jda]

I have had lawnmowers that would not eat algae. Most do, but it is not a sure thing.