They have a huge variety and a lot of wild caught specimens. I've personally been in the store when I lived in Portland and they have an excellent facility. I've only purchased in person but they do ship fish and plants. They have a lot of stuff on aquabid.com too.
+1 for Wetspot. They are on the other side of the state for me, and I either have fish shipped in the fall/spring or will head over there in the summer. It's totally worth it. They have tons of odd balls, and a huge variety. They have some of their fish listed on Aquabid.