As I mentioned earlier, there is a Marine Stewardship Council logo, a blue logo, on products, but companies have to pay extra to use that “chain of custody” logo, as it's called. They can have certified product without using the logo, but then the consumer wouldn't necessarily know it unless it's said somewhere else, whether it be in store packaging or something like that.
On the wild-capture fishery side, MSC is the gold standard logo.