Hello all, this is my first post. I have recently introduced a Black Ghost Knife Fish to my tank and was wondering whether it's behaviour is normal: It lays on the gravel on it's side quite alot. Occasionally moving to another spot. Is this normal or is there something wrong? The PH is fine the temp is in the right range. I've been feeding it blodworms (I'm assuming it ate some before everything else got at them!) Please give me your input.