We know fish as an important ingredient to a healthy diet and so, consider the argument..
In supermarkets, it’s presumed that “merchandise” are new or fresh — of course, especially if it’s from a renown supermarket.
Still, don’t you think that there could be times where what makes it actually fresh is only just ice? Who knows, it may have been there for many days already, see? So, next time — “inspect.”
On the other hand, the lowly wet market usually gets the brunt on accusations of unfreshness and all. But then, here, it is easier to detect if the fish is good or not — as vendors don’t really have the tools and facilities for better storage.