[Jacob]

It’s true, there are some obvious problems I wasn’t aware of or didn’t think of, maybe a more realistic hope is that in stores which already keep less common fish, there is a chance for them to become more common, well known and reliably available, and then find a potential audience that may be big enough to help conserve the fish.
Extra time and money for a fish that might die, for reasons you can’t control, that your store doesn’t need to sell to keep existing, seems like what wild blackwater fish are right now, even to the stores that sell almost everything.
But these places will probably sell them if they’re available locally and are easy for them to acquire and house.
And maybe there are some people who will learn to appreciate the whole experience of breeding the fish and understanding and imitating their natural habitats. It only adds to what are already appealing fish, and maybe if there are people who will pay for and maintain reef tanks, there are some people out there who will keep blackwater tanks even though it’s not as easy as most freshwater aquariums, and in some ways an acquired taste.