I love that they stock a lot of environmentally responsible seafood -- including Ontario shrimp (grown, I believe, on a disused pig farm)! And I like that the selection of fish (and the fish of the day) changes depending on availability. I cannot comment on it as a fish market, except to say that I've seen types of fish for sale there that I've never seen anywhere else and that the fish in their cooked food tastes very fresh.
I love the okonomiyaki here, and I'm Asian. I think about it more times than I'd like to mention. Seriously, you want to get it. Be aware that portions are a little small; me and my fella usually split 3-4 things between us, though he is a pretty big eater.
Also, they have a reputation for treating their staff well (compared to other restaurants), if you care about that sort of thing.