In general they are very hard to keep ans hence not that common.
They need a very deep substrate layer and can damage themselves trying to burrow but hitting the tank bottom.
They also need plenty of space or fights will occur, espiecially between males so a large area tank is a must.
Not many aquariums keep them which also hints of the problems.
If you do try then good luck with them and please let me know how you go after a few months.