Dheltzel, many people keep Oscars in brackish tanks. I have not owned any brackish ponds, but many people who do keep Oscars. The pipefish are most definitely not for beginners or those who aren't ready to take care of such a complex fish. Thank you for your input, I will certainly research more before purchasing any brackish fish or tanks. Do you personally keep Oscars or pipefish? I know almost no one that manages to take care of them successfully, let alone breed them.