sounds like a clearly educated and experienced fish keeper.
however, the question in this thread, unlike yours, did not state "captive" size, but rather max adult size, which is regularly recorded in the ballpark of 40". also, given a true monster tank or pond, they will potentially grow close to that size. but unless you are actually providing thousands of gallons, i woulnt put your money on having a 40" CL to brag about. not to mention, most people dont keep them long enough to see their full size.
fair enough
But thanks guys, now I know. 
