Ok guys, I'm getting a NGT soon. I currently have 4 indos and a NTT together. Indos are between 4.5 to 6 inches, NTT is 6 inches. The NGT is about 3 inches. Will they play nice together? I'm thinking 6 Dats should curb the aggression a bit. Currently the indos chase eachother and have some nipped fins. They are in a 55 long for now. They will move to a bigger tank when they get bigger. Thanks in advance.