Channa gachua, Channa orientallis and Channa bleheri are the only snakeheads that i would recomend as being semi community safe, however they are still snakeheads and if they feel like it will just rip the eel to bits. A much safer option would be bichirs (Polypterus species), while these are still predators they are gennerally not as aggressive as snakeheads and will only eat fish that can fit into their mouths.