proper feeding?

[CAPOREGIME]

ok, i have a green arowana, bout 9-10 inches, an NGT, 5-6 inches, another 3-4 inch widebar, two delhizi bichirs and a royal pleco. im currently feedin once a day. i usually put in 5 cubes of frozen bloodworms and a pinch of krill or pellets. my question is if this is enough food for all these fish? i know some people feed like 3-4 times a week but i just dont want to jeapordize them in anyway. what is a healthy feeding which would mimic a natural diet for fish?
thanks guys

 

[Horiyoshi III]

I feed quite heavy (to the point of visual satiation) but i also fast 1-2 days a week.Actually the info on the food containers are kinda accurat,feed 2-3 times a day,what they can eat i 2-3 minuets......simple.I have pikes and other SA/CA pigs, so i feed till there bellies aren't inline with their body.Good visual indicator.

 

[cichlid savage]

I feed 1 time per day. enough so that there is just a bit left over. Fish may or may not eat daily in the wild so every once in a while i skip a day.