i think there is one in rehobeth.... but the 4-5 stores in delaware i cant recommend very highly.. live stock usually has the plague or something close to it... and corals 9 times out of 10 are dead, dieing, or melting...
If you drive into salisbary maryland you can go to Dr.Macs a totally awsome facility where they grow and propogate their own corals... they also have a really nice website.
Other then that your looking at a pretty good drive for a nice fishstore that is trust worthy.
You have ECA just south of philly, you have Exotic Aquatics in Towson maryland, and that fish place in lancaster.
Some of the local stores will have a decent looking coral or 2 but they are priced very high..
If you just want to go to a fish store, the fish bowl in dover is worth a good laugh... they keep anenomes and everything under no lights at all.... their corals die within days and they leave the skeletons in the tank and im pretty sure they'd sell you one as a live coral lol...
Just fish is in Bear they recently keep a good size collection for corals and fish.... but the fish are diseased and the tanks are covered in some serious algae.
Same goes for Newark Tropics..
Dr. Macs probally isnt to bad of a drive from where you are id check them out
Dr. Macs. They are probally the best around.