Mine were slow to taking larger food than pinkies (I think it was because they are lazy!!). Mine weight 35 grams, 47 grams, 51 grams, and 124 grams. They are all taking smaller fuzzy mice (with the larger one taking hoppers). I feed twice a week and it seems to be a good fit. I keep regular track of their weight too- it really helps plot their growth. I can easily see when one is falling behind or flat lines in growth. I'm a little OCD but I like knowing. I have a hard time thinking in inches- how much does yours weigh?