Ok wow those guys are HUGE. I am guessing they need a very large enclosure.
It seems it will need a large water source that flows relatively fast, is slightly tannic and has a sandy bottom. Also in the wild they eat quite a few crabs. They are known to be very expensive and not long living in captivity. They are native to a narrow range in Equatorial Guinea and Cameroon. They are not thriving there due to things like pet trade, habitat destruction and dams. The enclosure would have to have not just a large ground space but also fairly high because they can really jump. Overall to keep one you have to mimic their habitat nearly perfectly. This is very hard and overall i would definitely say no, you shouldn't get one unless you are willing to pay $30,000 to turn your basement into a habitat.
I got bored a while back and looked them up.