The Shark Aquarium in Hillside has an awesome stock of fish. The most I have ever seen -they must have a few hundred tanks. It's on 22 west in Hillside next to a Gulf station.
The Pet Shanty has a good selection of plants and fish/inverts- they receive their shipments on Thursday's. They have a very good selection of equipment. I like them for Eheim parts, always in supply.
both places worth checking out