Looks like a normal malaysian gold / green arowana to me, I'm having trouble believing that it's a x-back nor an RTG since I've just shopped around for an RTG and none of them looked like this even at worse conditions.
As for the cert, I think any X-Back will / should have a cert for the price that you pay for them. especially a blue base x-back
As for the cert, I think any X-Back will / should have a cert for the price that you pay for them. especially a blue base x-back