(These fish may not get along with your others so DO NOT purchase unless tank is empty or purchase at your own risk) In this box you never know what you will get, with this purchase you are guaranteed a fish or even multiple fish, depending on your tank size selected. For instance if you select 25G your more likely to get multiple smaller fish, than if you selected 75G you'll most of the time recieve 1 bigger fish, again this is a mystery and that is just an example. Sometimes even extra items may come in the box like sponge filter, fish traps, and more ... you just never know! *BE AWARE: NO REFUNDS for this specific purchase*