i spend 88 cents every other day for tigershrimp for my arowana, then probably 3 dollars a month for the the oscar and a dollar a month for the barbs, livebearers and about 3 dollars a month for the koi so thats probably about 20 dollars a month but 13 of it is for the arowana. i like to feed lots of live crickets, mealworms, redworms and brineshrimp. -john