At 4.5- 5 months old how long and round should a BP be on average ? I tried to measure my guy tonight and roughly got a measurment of ... 23 inches long and about 3.5 inches round ( midway ). At this age are they considered a juvinile ? Also should I maybe try to start him on small rats? One more ?? he is in a 20 gallon tank , Should I maybe go to a bigger tank ? Any advice would be Great....Thanks!!