So about a week ago I bought three pregnant female guppies, and I noticed two fry in the tank at the store. The asscoiate gave me the fry for free, yay, we'll got home floated all the fish and then set them lose. Well later on I notice two fry swimming free in the tank, I had put the two free fry in a breeder net. So they went in there with them. My question is at age to they start showing color? Three of the fry are a brownish grey, and the other is a yellowish pink. Is this normal?