Those are p.nagyi.
When I saw the photo I thought that the fish looked really sick, but reading on I understand its a stressed fish, – why pull it off a nest with eggs ? It stresses the male a lot.
Anyway, – why are you only getting a few surviving fry, – there could be many reasons …
1) you havent yet noticed 🙂 … sometimes theres a lot of fry but you dont see them before they are really about 1 cm. In particularly if you have leaves and stuff in the tank
2) you are having the female in the tank, and she has a tendencency to eat her off spring. It happens
3) do you feed the fry ?