I'm not sure about bigger species, but dwarf snakeheads can. I had my 7 inch channa gachua with a 3" jag cichlid and 4" texas cichlid. The gachua has been in with him since the jag was a small 2" in size. Also, the gachua cant chase the jag for its life. I've also housed a 7" bichir in with the gachua, they became friends, maybe because they look similiar in long tubular bodyshape? I think as long as it cant fit in its mouth and it can runaway fast enough, it should be ok, its your gamble. gl