I have started a 125 gallon hap tank. I currently have in the 2 inch range 2-livingstonii, 1- venustus, 1- Borleyi, 1- deep water hap, and 1- Moorii blue dolphin. All are around 2 inches but my livingstonii are occasionally fighting and my question is is this a sign of both being males or would 2 females or male and female juveniles fight each other?