Thanks. Yes that's exactly what I thought. I wish I could educate my wife on this. She thinks I am cruel. She wants to feed fish three times. I told her fish will come near glass every time regardless if they are hungry on not but she believes they come near glass because they are hungry and dependent on us for food so we have to feed them and feed them.
I found her secretly feeding fish while I am away. I will try my best to convince her.
Apart from this, gold made a mess in my tank. Not like a big mess but cichlids crushed it so very tiny particles started to wander here and there. Maybe I need to feed very less? But I belive these tiny food particles will be always as the mini pellet is actually not very mini. Fish crush them inside mouths while in case of discus food (which I was feeding) they made no mess of it at all. But I am not sure if feeding them discus food is good for their health as it is more meaty than plant based.