That is pretty small to gravid. I usually wouldn't breed my bps until the female was 1500 at the very least. Still possible she is gravid. Ive seen bps that small reproduce.

The thing is that my gravid females always looked pretty stuffed when they had eggs. If you gently palpate her stomach, can you feel anything? If shes gravid it should feel like a big string of XL pearls inside of her as she runs through your hand..