I'm not even sure my BGK knows he is in a tank with other fish, he is a loner and often just plows through other fish in his way. Mine is a juvy 5" and shares a tank with other juvy fish (its a growout tank) like, JD female, Severum, Firemouth, Pearl Eartheater, Pictus Cat, Raphael Cat, African Featherfin Cat, Acei, 4 tinfoil barbs, peacock eel and a senegal bichir. Non of which give my BGK the time of day. But they are juvy's, adults will be different stories. But IMO I dont think it will be an issue for you.