The one at 183 and Anderson Mill is Horizon Pets. They're pretty cool too, I didn't have a chance to look around a lot, but what I saw was nice.
River City Aquatics is a little bit before that on 183 N.
I've heard rumor that the guys who own River City Aquatics and Horizon Pets both use to work at Amazonia for a long time, but left because they didn't like the direction it was going.
Eheim Pimp Club member #12