i have a Honey Gourmi in my 30 gallon tank along wit 1 orange catfish , 3 lemon tetras, 1 angelfish. My question is my Gourmi doesnt seem to like the angelfish. he chases him but doesnt nip him is he just playing or what....another question ive nerver seen him(Gourami) eat before ive had him over a week does he eat what left over ?