Sure! Seven Seas (www.seven-seas.nl) is quite close to Amsterdam and very recommendable! It is located on the premises of a garden center, so... Ask for the garden center if you can't find it! It is a small shop, but worth a visit.
Waterweelde (www.waterweelde.com) is also worth a visit: a impressive choice of fish and inverts, including many rare fish... It is a wholesale and lfs together, so, if the lfs doesn't have a hammerhead shark, the employee will get it from the wholesale part. That part is normally restricted for public, but I can tell you it is impressive!
Then there is Aqua Compleet in Rotterdam (www.aquacompleet.nl) Sometimes a very nice selection of corals and fish, sometimes almost nothing... Best staff and service I know though!