This is why I love this site!How much does he eat, for example within a week? Does he/she readily eat food that falls right in front of her or very nearby? I've always seen a big difference in growth rates of Moba within groups where the males eat alot every feeding (everyday) and some females eat as little as 2 or 3 times per week.
Yes, this fish would eat if it fell right in front of him/her. When I fed some shrimp on Saturdays, for example, it’s a bit messier than the pellets and I could see it was picking off some pieces. It could be that you’re exactly right and that this is a female and just eating less. In which case, I wonder if my four who are always wiggling for more food are all males . . .
Would you be fussed about the more skittish behavior? Or does that just happen as they are outgrown by their more boisterous tank mates?