Marketing isn't convincing you breeding fish is hard because it really is hard to an extent. But marketing is making people beleive that keeping a box of saltwater is difficult and expensive and it's really not. We will not make progress on breeding fish at a hobby level when everyone thinks you need an insane filtration system that costs 5k just to keep some brood fish. And you don't need that.I'm not sure how marketing has fooled me into believing many saltwater fish larvae are very difficult to rear. Many have tried, few have succeeded, even fewer have decided it was ultimately worth their time. Even in the freshwater scene, ask anyone who has bred discus or angels (piece of cake by saltwater standards) if it was ultimately worth their time as an adult with a life outside of aquariums. Only the most hardcore fish heads do so with any consistency.
"You don't even need to do water changes"
This isn't a reef tank, this is breeding fish to make the hobby "self sustain[able]" (or for fun ). We're rearing 10s or 100s of fry in tiny quarters and feeding them many times a day. I'd like to see the filtration system that makes this possible without water changes.
Again, it's not impossible, and people like Kathy Leahy exist, but I don't think marketing the is only reason we don't see many cb tangs or angels.