it is fast that's for sure. I read that they like cooler temps (72-76) so I put it in my Sea horse tank.The temp in the SH tank is 73 at all times. (H. Redi) Because there is lower flow in there, there is more algae for it to eat.
The only reason I even noticed it on the rock was because as I was walking by I noticed what looked like little puffs of smoke comming out of a rock. It was this little critter that was doing it. I also read that this was it's spawning behavior. Since there wasn't another one, it was pointless, lol.
What kind of algae do they eat? Hair algae by chance? I have 2 spots about the size of a nickel each of Hair algae in the SH tank. Not out of hand but still there. I bought a lawnmower blenny to take care of that but he doesn't touch it. Go figure!
Angie