I bet it would be impressive but soon you would only end up with some fat Mala's.....
There was a guy, also had a vid that housed a gold wolf and mala together i believe both were around 6-7in. It was a nice combo the gold wolf patrolled the mid and upper levels of the tank and the mala hovered the bottom in the plants and driftwood. He also dropped in some goldfish and it was NICE TO SEE THEM EACH HUNT AND EAT THEIR PREY......
Don't know how long that combo would work as wolves are unpredictable and maybe even more so when they pack on some size but nonetheless it was a NICE SETUP....