Here's a sub-adult. It still has over a foot to grow and full adults can weigh 150lbs. Think your glass is strong enough to stop a full on charge by one of these?
deffenetly a indoor pond fish .. the lfs I regularly visit has one in his overflow set up that a year ago was 4'' along in a ten gal . the fish is a foot an half at least by now.. un real growth I agree..