I'll reiterate again, if you keep fish in a tank, you're a hazard to the oceans
Equating dogs and crates isn't entirely accurate. Tank/fish size is like comparing taking a wild wolf and keeping in the extra large size crate instead of the undersized medium crate. The furrari Xtra large is a wonderful crate, but the wolf isn't any better off than if it was in the undersized crate. The wolf belongs in the forest. The fish belong in the ocean.
We don't need to "research" reefs in aquariums. How many millions of fish have died, tons of rocks mined, corals ripped from the wild, all in the name of this research??
Sure, we all have our excuses for why we keep them anyway, but it's still bad for everything but us.