Confusing heading of reports

A report in a local English daily by its staff correspondent was published on September 24 in the 'Business page'. It put a rather confusing heading for the report which I believe was not provided by the correspondent.
The heading was: "Ban on export of fish, but Hilsa, lifted"! It included the commas too! In simple English, it would have sufficed to state: "All fish except Hilsa can be exported", which should have been the appropriate heading. Interestingly, another report from their Barisal correspondent was also published on the same day. It stated that there was a ban on catching Hilsa fish for the next ten days! This meant that in any case, there would be no export of Hilsa fish to India for the next ten days, effective from September 24th.! It however only depends on how effective the ban will be, and how it will be enforced, given our large stretch of common river boundary with India. However, possibly it will be more difficult than comprehending the headline the daily gave in its 'business page' on Hilsa export!