If you only raise scavenger fish, what does Feng Shui say?

I raise fish myself and show others Feng Shui. I never care about the number of fish. It's contradictory to care. For example, your fish tank is in the north. How many fish do you think you should keep? You say my river map is the best in June, but according to Yin Na, you are gold, that is, April and September are the best. Look at the positive five elements of the yen, you are fire, erqi, but look at the sky. Of course, it's good to keep eight in the Eighth National Games, and nine in the future. Wait, you don't even know what's going on