finding nemo

The one I described is called a fish only with live rock.
FOWLR if you want to use the abbreviation.

A reef tank would be setup slightly different since you would need expensive lighting to keep corals alive, you would definitely need a protien skimmer, and you would have to be dosing trace elements, calcium, etc. to maintain the corals.
A reef is a more work and substantially more expensive to setup and maintain.

To be honest, a fish only saltwater tank is basically a freshwater tank with a bit of salt added to it. Not hard to maintain at all.

Originally Posted by SPJ

To be honest, a fish only saltwater tank is basically a freshwater tank with a bit of salt added to it. Not hard to maintain at all.

That was always my approach to it, especially for smaller tanks. I kept and bred my clownfish as if they were just African cichlids.

For someone new to the idea of saltwater aquariums, I'd recommend The Conscientious Marine Aquarist by Robert M. Fenner. It's published through T.F.H. so it's pretty easy to find. It explains a lot of the terminology and concepts behind marine fish and animals in beginner's words, and has species specific information for numerous common fish, inverts and corals... plus it has some really cool pictures.