Clearly parosphromenus, but still difficult to say excact species, – I am not sure. But the last picture is likely a male, and the first could well be a female.
Could be nagyi, actually could maybe well be, based a little bit on the fact that it seems the caudal fin of the male has a colourless band at the end. Edit: I am not at all sure about that 🙂 .. it might not be significant at all. But the male does have quite a broad white band in the caudal, and seems to me the ventral fins are quite short, – that might be helpfull in id’ing.
But again before the fish really feels good its very difficult.
They look rather thin to me, -they might have been long underway, with no proper food. So feed careful but well 🙂
I dont want to be scaring anyone, but the top one in the photo with two fish, looks a bit greyish, – keep a look out for things like odinium, – …. it may just be the light, – but just in case.