I know the fish being imported from overseas are coming in with amazing color, then losing it. Some of them almost completely. These are not dyed fish, just hormoned up. I heard it used to be legal to buy/sell in the US and you would just add it to the water. Is it legal to get from anywhere? Do any foods have it in them? I know it can make the fish sterile but I don't care because I have an all male tank.