Breeding? Really? With fish? Wow man, we gotta get you a woman, pronto
Best reason is cost - way cheaper. (by a factor of 10)
Especially since I have access to the local FW wholesaler. I set up a beautiful 35 hex FW with about 50-60 fish. Never a problem. Almost no cost. All the fish (including gold pearl angels & congo tetras) cost me less than 3 SW fish.
On the other hand, as soon as we set up a SW tank (after watching NEMO), we never looked at the FW tank so I sold the fish & the tank. From 7 small - medium FW to 4 medium - large SW.[/quote]