Small Rabbit fish?

[bigevill1]

I want a grazer to add to a 20 long that is plummed into a 210 gallon reef. Are there any rabbit fish out there that stay VERY small? Any other fish you would recommend for such a small tank? I am getting way too much algea growth in my frag tank, and even a sea hare isnt keeping up. I am going to change the bulb out on the light soon and think that may help, but who knows. there is ZERO algea in my display thanks to 5 tangs and a HUGE golden rabbit fish.

 

[Kahuna Tuna]

All of the rabbits in the trade get at least 6-7 inches and I sure would not put one in a 20. I would do a lawnmower blenny.

 

[bigevill1]

yeah, all of the rabbits I know of get too big, but I figured I would ask.

 

[LobsterOfJustice]

urchin. Might knock stuff around though.