I've had my niger for almost two months. He makes sure to eat every bit of food I give him. He ate a chromis I added with my yellow tang within ten minutes(which the chromis was only about the size on my finger nail, so I expected that to happen)right now him and the tang are great. Always swim together and don't fight at all. I do find it funny that he has aggression toward my other pets. I will pull up a chair and my cats will sit on my lap and watch too, but he lunges at the glass at the cats.