Yes and no.
Whilst they are social fish and should do better in groups, groups really means greater than five.
Unless you have the space for more than five I personally would stick with one. I put three together in a 4’ x18” and one just terrorised them other two until just one remained.
I could not sex them from the frequency of their pulses so may have had three males but I wouldn’t take the chance unless I had a bigger tank.
And of course wrong way round, leopard bushfish are called climbing gourami ? by some but more often called perch, but they are not the same family as gourami, they are anabantidae whereas gourami are osphronemidae, but yes they are all labyrinth fishes along with snakeheads.