Hard to answer. I find that as with most fish they all have different temperaments.
I had three Parachanna obscura, they paired up and killed the third. However, now they Are 10” and live in a 390 jewel corner tank With a musk turtle, 3 leopard bush fish at 5”, 5 large bumblebee cats, a synodontis and a pair of bristlenose plecs.
Might be tempting fate here but all been together for almost 18 months. Whilst the Channa have coloured up and appeared interested in breeding, I have little in the way of floating plants and nothing so far.