I like to visit 5 of them.
Saltwater Fanta Seas they have a good selection of coral and the best fish selection in town, They have a nice 240gal cube show tank as well. Addy is 10618 Northeast Sandy Boulevard Portland, OR 97220 (503) 255-1645.
Westside Aquarium This is a bit of a drive to get to and is about 30 min from portland, they have a great show tank and have higher end coral. I dont know what Tim has in stock right now because he is gettin ready to put up a 700gal tank on the 23 of april.they also have a web site to with pic's addy is :2020 NW Aloclek Dr Ste 108 Hillsboro, OR 97124
Ocean In a Box I would reccomend next. This shop is just accross the bridge from portland in washington. These guys have a lot of nice coral and quite a few fish. This shop just opened up not to long ago and have the best prices in town. Addy is 4601 NE 78th Street #250 Vancouver, WA 98665
(360) 977-7864.
Rose City Aquarium is worth looking at as well. They have alot of Frags and cool chalices. they gave some nice acans as well. Addy is 2929 SE Powell Blvd # 1 Portland, OR 97202-2066 - (503) 233-3913
Upscales is next but is a little drive south from portland they have a couple of nice show tanks and a good selection of corals as well. Addy is 19295 Southwest Martinazzi Avenue, Tualatin, OR(503) 691-6253.
I hope this helps out a little if you have time I would visit them all. But thats just me I love the fish shops!!