"Since the post I noticed that the new fish I added to the sump also turned brownish but seem healthy. The aggressiveness wasn't an issue. The size difference was from tank to tank plus I don't know how many male/female I have. I'd…"
"I agree Jim, but i am on city water so i am not sure what is worse. Currently my wife and i are trying to buy a piece of property outside of town and then i can switch over to well water and just adjust to that.
thanks for the info."
"The size difference could be food competition. In tilapia, the more aggressive fish eat a lot more than the more passive fish. So a single fish could grow three times as fast as another, depending on how aggressively they compete for…"