When all is said and done you have to want to breed fish for reasons other than financial gain to get something out of it - maybe because you have friends who want some, or maybe because you just want to see if you can do it - there is very little money to be made. The only exception I've found are things like the Guppies, or in my case Whiptails, which take relatively little money and effort to breed, raise themselves, and can be sold off from time-to-time to subsidise the cost of having the tank in the first place. The real cost of rearing most fish locally far exceeds their value in the local marketplace, which is why it will probably never be much more than a cottage industry at best. Ironically making imports harder might actually improve the situation, but only if people are willing to financially recognise the effort that goes into breeding fish by paying the local breeders / retailer who buy from local breeders a reasonable price.