im not familiar with the bio gold pellets, but one a day sounds like very little. i would suggest two to four pellets a day and maybe a blood worm every day. Just remembered you said she was 2 cm (which is less than an inch), so make that 2 or 3, and one blood worm for her. and maybe four pellets for him. Like i said though, Im not familiar with the size of those pellets. A good rule of thumb, their tummies are about the size of their eyeballs. Im sorry I made you feel bad. Certainly not my intention. You sound like youre being very conscientious with your feedings. Keep up the good work!!