Fishguy speaks a lot of truth. I know that dynamiting reefs in the Phillipines, Jakarta (or however you spell it), Fiji, Tonga, and all those other little clusters of Pacific islands to collect liverock were bad and probably still are. I probably own 150 lbs or so of Fiji liverock and some of it was probably ill-gotten. I've been in this a while though. Things have changed in many of those areas though.
Cyanide??? Oh, where to start? Back in the old days long before I got involved in the hobby, wild Florida liverock was being harvested by the ton, cyanide was routinely used to harvest fish, and people were even using household bleach to chase bugs (Florida lobsters) from their hiding places to collect them when they were in season for weekend "bugroasts" where divers would get together on the weekends and barbecue the bugs they caught that week (sometimes using bleach).
Florida today is a different place. Saltwater fish gained a reputation for being expensive (they are), hard to maintain (they were but no longer are in most cases), and something for experts only. Why? Because they were collected using freakin' CYANIDE!!! Today, I see cyanide fish in the USA extremely rarely judging from Barry's shipments over the past several years. The reason SW fish were thought to be so hard to take care of was that they were cyanide poisoned and destined to die from the word go!
Take the "Mandarin" and "Psychadelic" Dragonettes, ( I know they are from the Pacific so there are gaping holes in this comparison BUT...) (Synchiropus sp. for you geeks out there) also know as "Mandarin or Psychadelic 'Gobis'. They are not. They are not gobies at all. But I digress...) These fish used to be thought of as "just waiting to die in some loving aquarium." Then they became known as a genus that you shouldn't buy if the gut was emaciated. Honestly I am still hesitant about those but if they appear healthy otherwise I'll still buy them.
Now they are a fish that can live a great life in a healthy reef. They can come in emaciated and pig out on your copepods, amphipods and other stuff we can't even see in your aquarium and get as fat as the one in philjess's aquarium. Honestly, I think this fish is either on sterroids, is a genetic freak, or is in hog heaven. Honestly, having observed this animal for some time, I'm betting on the "hog heaven". Hey Phil, post a good pic of you obese fish!!!
But, the public stopped buying these "destined to die" fish and so the market went away. The government also helped out and banned this practice. Of course that did nothing for the fish collected overseas. We don't see much cyanide-collected fish from overseas these days because people stopped buying them. The market dried up. People realized that it was smarter to buy a $20 yellow tang than a $14 yellow tang B/c the $14 one was GONNA DIE! So that crap has pretty much stopped in our corner of the market.
The dynamiting of the reefs? Honestly I don't know. But judging from the quality of the Fiji I see today, they aren't dynamiting anything. They are down there picking up scraps. There are a number of possible explanations some good some bad. Does anyone know? If you do, please post.