Congratulations! He's very cute, and the tank looks wonderful! Most bettas are little pigs. My two have never turned their nose up at a bloodworm or Hikari pellet. Some people on the betta forum I visit feed 5 pellets twice a day and eat every last bite . I tend to like to give mine smaller, more frequent meals. It adds more excitement to their day I think (and mine! ). Mine generally get around 6-7 pellets a day overall, or 3 pellets and 3-4 bloodworms etc. Bio-Gold is a hugely favored brand among betta fanciers. Hope you enjoy your new guy!