Well i went and bought 4 rams. 2 gold and two blue. The blue were 9 dollars each and the gold was 8 dollars. Well they are in my ten gallon. The gold are around 1.5. And one blue is 1.3 and another is 1 inch. Well somehow the small ones are being aggressive to the bigger one. They are at a corner where there is a flat stone. Are they territor or something else? thank you