I was just reading this thread and had a feeling that we were going to end up at dyed fish. Oh well, slwar555. Most people who buy them are unaware of this too. Hopefully they will be OK, some do survive. They will fade but IMO will look better that way. Take care of them, they have been through a lot at the hands of people who don't give a darn about their welfare. Now they are in the care of someone who does. I wouldn't worry about the aggression, most tetra will go through a period of establishing a pecking order but usually no harm is done. Good luck and welcome to the forum.