Just so the Tang police dont come after me I will also clarify that I agree a Tang shouldn't be kept in a small tank, But a Scopa tang is small compared to other tangs, but still can be quite nasty...here is a link to the Tang characteristics.

http://www.advancedaquarist.com/issues/nov2002/Fish.htm

Thanks for the link.

Scopas are small as tangs go but they like yellows and purple are swimmers.
They require the swimming room that longer tanks provide.
The reason many reefers here suggested the Kole is that unlike other tangs, it tends to meander about the tank searching for film algae on rocks and the glass.

And even then they need the larger rock volume to provide enough grazing opportunities.

But hey....people will do what they wanna do with their tanks....whether they should or not.

Sorry to bring an old thread back to life. My tank is bare bottom, so the bottom (10 sq ft) never gets cleaned, nor does the 100+ pounds of live rock, nor does the center overflow with 11 sq ft of glass. Based on my own personal observations I find it unlikely that my kole moved to other foods because it was being starved.