I'm gonna let someone explain, but you shouldn't ever put that many fish into a new or even established tank in at one time.. really ever.. you should have started out with no more than two.. you are gonna have to keep an extreme close eye on the tank, you may have to do 2 or more waterchanges a day.. or take some back to the shop you got them from... I'm not sure what additives you put in your tank, but it would still make me really nervous.. I'm not trying to sound like a butt, I just want every new kid on the block to have a happy healthy tank...