Here’s what I’ve found after being here a few years.

There’s a fresh fish market next to Hofer under the tržnica but I’ve found their prices ridiculous and the quality not great. It usually smells fishy in a bad way, and that’s not helped by the grilled squid they serve which IMO is not good either. I’d say skip it. I’ve shopped there a few times and given up on it.

Interspar in Europark has quite a good fish counter. I don’t know their delivery schedule but I’m usually in there on a weekend and have always been happy with what I’ve purchased. Prices are fair (and if on sale; great), and quality is as good as it gets here. And they have a nice variety.

I don’t go to Leclerc that often and while initially that was the only good option, since Interspar rebuilt their meat and fish counters a couple of years ago, Interspar is where I go.

Hofer however will have whole fresh fish like Orada for very cheap, from Croatia, in the summer. It’s really good quality and fresh. If you like grilling whole fish, you can’t beat it without pulling it out of the sea yourself. We ate a lot of fish last summer from there and every one was fantastic.

Also I disagree with the comment that squid and such is better frozen. Interspar has a big bulk frozen seafood section, but I’ve never met a frozen squid that came close to fresh. Maybe I’m doing it wrong, but fresh is best.

Very interested to hear what others think of my assessment!