What Mary is saying is true. The Hawaiian suppliers in Honolulu, depend on imports from neighboring islands and then re-export them under their origins.
What happens though is that the fish then re-sold by the wholesaler....say in Los Angeles, then labels the fish Hawaiian, but not in all cases.
Flame angels.....most people think they come from Hawaii, right? Not true. Only very few Hawaiian flames are caught every week and actually are very expensive.
The majority of the flame angels sold today are either from the Xmas Islands or the Marshall Islands, Cook Islands also have flame angels.....but not many would know that.
Other fish like Goldflake angels, black tangs, etc are imported into Hawaii as well.
Although coral is not legal to import and export through Hawaii, unless just passing through in transit, there is mined rock that is sold as Hawaiian base rock.
It's a complicated issue and one that I am sure one day will be corrected as fish counts will most likely be counted and tracked from origins in a more complete and accurate manner more similarly to corals (cites animals).