Tang police is everywhere. Screw them folks! Like I said in another thread not only Tangs would enjoy more room to stretch out thier fins. Seriously they need to worry about thier own tank LOL. People setting up 5g picos and 10-24g nanos and no one cares about the fishes they throw in those Tiny tanks!
I've had really bad luck with yellow clown gobies in nanos, they tend to get bored and nip on my SPS.... or maybe they aren't bored, but that's just what they like to do?