Yes he should be much larger, 5ft plus at the very least. My Black throat is 1 yr old and 6ft long / 30lbs. I see hes in an aquarium with no soil. You know thats what killed the black throat right? I honestly cant believe nobody told you that. The black throat could have totally been saved. But please get this one into a suitable enclusure before the problems start popping up. They die pretty quick as you have seen.