They may become a little nippy or waste away if left singly or in smaller groups. reverendred 03-30-2007 11:27 PM i currently have 3 in my 10G tank and they are awesome. they have survived ich outbreaks and everything else thrown at them including being moved twice! mine are around 1.5 inches long, ive had them since november. im thinking about getting 3 more or a few guppies to add in the tank wi