I don't understand but i can't and never could get my tsn or my rtc to eat pellets. They would rather not eat so all I have ever fed them is live foow. Fish and nightcrawlers. But I have owned them both since february and they are both exceding a foot long and they were only 1 and 1/2 inches long when I bought them. Amazing growth in that amount of time and my new baby rtc I just picked up is a little more than an inch long now and he won't eat anything but rosy reds.