Depends on how moral you're feeling and how fat your wallet is.Then is it still a good place to buy fish?
OP, why do you suggest that "sustainable caught" is the same as "no cyanide?" The two are very separate.
Assumption based on the most common industry practices. Liveaquaria doesn't capture their own fish, they get them from a distributor.You know this how?
I would make the assumption that Live Aquaria would not knowingly participate in the selling of specimens collected under questionable ethical practices. If they did and word got out it would most likely be a severe blow to their bottom line. just my 2 cents.
The fish are the proof of the collection methods. If you have a supplier that consitantly has fish that dont do well- you change the supplier. If the fish live- they likely have been collected and handled in a safe manner. As far as numbers collected and exported- that is up to individual gov. agencies to decide.
Sustainable means not clearing out all of the fish so that the wild population can maintain healthy numbers even with what is being collected by humans no matter what you are using: cyanide,MS222, Quinaldine, nets, hook and line, etc...
Not using cyanide doesn't qualify it as 'sustainable' collection.
Finding an honest collector, then an honest shipper, then an honest distributor/wholesaler, then and honest retailer is almost impossible. One doesn't know what the other is doing. They can say anything they want to sell fish, but very rarely does a seller know the source of the fish, or what they have been through prior to ending up in the retail tank.