I don't know what to tell you Dana, I'm sure if we measured the weight we'd find aquarists are all over the map in reality. I feed my fish lightly, once a day, or at occasionally very lightly twice a day (I have small neons etc.) and I feed an amount that seems to get consumed within a 2 or 3 minute feeding session. The fish are voracious eating it at the surface, usually spashing me as the shoals hit the food. I randomly sometimes miss a day, maybe one or twice every week or two and don't worry about it. I grind the dry flake food like your picture shows into a smaller size between my fingers as I have smaller fish and after I've put out the surface food I grind a little below the surface so that it falls through the water column for some of the smaller neons that are lower down to eat more easily.
If you read and search widely here on TFF I believe you'll eventually summarize the extremes of feeding amounts. OM47 has pointed out that small schooling fish like neons probably do a bit better with a couple of small feedings a day. People worry about excess build-up of extra food debris in the substrate but on the other hand, this same excess food is the very thing that provides some of the nutritive elements eventually used by plants. On the other extreme, the lighter end, most of the hobbyists here will point out that you can go on a vacation, even up to two weeks (and some even talk of experimenting with 3!) without feeding your fish at all and they will survive.
~~waterdrop~~
