I think the disconnect here is the assumption that all the other pressures on reefs and thus reef fish will allow populations to rebound. There is some data to support this, as the locations of MPA (marine protected areas) adjacent to unprotected (i.e. fished) areas are largely credited in helping fish stocks rebound on the fished areas - in healthy reefs. However, I would suggest that we have NO idea what the tipping point is for these populations as conditions continue to change every year. In your calculations you could easily cut your square meters of reef supporting fish drastically in any year due to bleaching and habitat loss, increased storms, ocean warming and acidification (UN suggests 90 percent of all coral reefs will be gone by 2050). And given that many of the reef fish that we don't currently captive breed are broadcast spawners, reducing the critical mass of fish populations, and thinning their distribution, may mean those spawning events are less productive. As the number of marine ornamental fisheries shrinks due to regulation, pressures on fish stocks on the remaining fisheries will likely increase - and we don't know what the impact will be. Given human nature and historical precedent, a dwindling resource is typically exploited to exhaustion due to supply and demand. I think captive breeding is an important part of the trajectory of the hobby, and statements that ascribe ridiculousness or absurdity to that effort I don't think serve the hobby. Anything we can do to, yes, reduce collection pressure on wild populations is a win not just objectively for the hobby, but importantly, for its perception. As a warning to what can happen, we saw the snow crab fishery in Alaska collapse recently (an estimated 11 billion crabs died in 1-2 years) due to ocean warming. There is nothing to say that a similarly acute collapse couldn't happen in any reef at any time - and the 1,000 fish collected in that reef that might otherwise seem insignificant could, or could not, make a difference in a population that is able to recover. I buy captive bred whenever I can, but I do have wild fish in my tank too. (I also run my tank on pure solar, to your point) I look forward to the time when we can build a reef tank with nothing but captive bred specimens. We are already there with corals, but supporting places like Biota is something we can do to keep the progress going. Trying to make the argument that it doesn't matter what we do in this hobby, or what choices we make, is unproductive apathy. I think we can do better.Then consider that the fish population will likely replenish during that year, and you'll see the absurdity of the idea that overfishing causes meaningful damage to reef fish populations.