I really like the word fishmongers. For some reason it reminds me of the opening scene of Corpse Bride. It has, however, nothing to with this shop. This is by far the best fish shop in town. There is this very famous fish shop in Scheveningen - whose name I am not going to mention - and Ruud den Haan is way better.
If I am not mistaken, this is a family owned business passed on from father to son(s).
My parents used to come here on Saturdays when I was a kid (though they were located somewhere else back then). They'd bring home some 'speciaaltjes' and that would be a real treat. Lucky b*st*rd that I am, I got to work just round the corner and can now treat myself to their fish whenever I feel like. Happy that the shop still exists and I hope it will remain in business for a very long time.