Hello everyone, I was wondering what kind of fish I should get with my black ghost knifefish. I am thinking to get an angelfish but, if they attack my GKF, then I would need a better one. Does anyone know if I should buy it or no? If so, what should I get? I have a very small tank but, that's all I have. My tank is 48 litres. I really don't know what to do so please someone tell me. Sorry for my punctuation and language technique, I'm only 12.