Mudfrog;2552657; said:What size tank is yours in? There aggression usually goes through the roof once they hit 12" or so, sounds like your right on mark.
In a 75g wide with heavy filtration. I'm not sure whether he will be ok here for life but i am always willing to upgrade (excelent excuse to tell the missus of why i need a bigger tank).
His aggro started to really kick in at 9" for me but has increased ever since.