There is such a thing as sustainable harvest which is what they use in the collection of Cardinal Tetras. Wild fish don't have to be exploited to the point of extinction for the aquarium trade. This is on the collectors. They are the ones that have to control their urges for "more" so that there are fish for tomorrow and not just for today. The same thing is going on in the food fishing communities around the world. Those that adhere to it have much better long term results than those who take it all in one swoop. The same could be done for the aquarium fish. HOWEVER, and I apologize to Brenna now as this does get a bit off topic of her thread, the real culprit to fish loss is habitat destruction. This is what is seen not just in the oceans but to land animals as well. There is no sense to saving animals and fish if there is no place for them to grow and live. That's the sad reality of over populations of humans. Look at the rainbow fishes and how many are gone from the wild due to habitat destruction. Same with Borneo and Sumatra. The Amazon is also under attack from farmers. Those who depend on the river for it's sustenance do better upstream from the farming than downstream. Human interference plays such a huge role in the surviveability of the animal kingdom. On a local level, years ago, a constitutional ban of net gear in inshore Florida waters proved that these nets were doing too much damage to the inshore fisheries. In just 1 year, the amount of juvenile fish soared as they were no longer being killed as bycatch to the netters. In 5 years, there was such an abundance of fish on the coasts that further proved the nets were the culprits. The ban stayed in effect and fishing in FL got better. Now, take the Pacific Salmon. Dammed rivers for human use had created a decrease in populations of certain species. Recent removal of the dams has allowed for some to start making a comeback. Need more proof that we are the problem? I've got more.
So again, there is a way, there just needs to be more people to have the willing.
Okay, now back to the thread's topic.