Standard Deduction Vs. Itemizing. Adjusted gross income has nothing to do with itemizing, which is a common mistake may people make. The section on Form 1040A following Adjusted Gross Income is titled Tax and Credits and includes Line 40 for itemized deductions and Line 42 for exemptions.
Bettas being kept as pets will do well on a standard pellet food designed especially for bettas (I recommend HBH Betta Bites or Tetramin granules) with an occasional treat of frozen/live worms or freeze-dried brine shrimp andbloodworms. Pet bettas should not be overfed; a few pellets per feeding is sufficient.
1 Do not overfeed your bettas because fish do not eat everything you feed them. The uneaten food settles at the betta of the tank and gets rotten. The rotten food can drastically alter water chemistry and this can be harmful for your fish.  Maintain a tight schedule of feeding your bettas. Just like we humans even fish have a digestive system of their own and feeding everyday is a bad idea. You can feed your betta daily only the amount that he will consume completely. What you can do is feed him little and see how much he consumes.