the water is nutral with me yes. when my water ph dropped to 5

the perents didnt lay for a while so are probably sensitive to that drop/rise in water hardness. try to keep it at seven...
im about 70% sure about the sexing, maybe more, the dorsal fin of a male is more pointed and elongated. Males are MUCH larger. so if that younger pair is of simular age they are definatly both female.males are more deep bodied as well and more blueish...
vid male is at front....
pic
male is the big colourful one,, mine isnt green but blue,,,
i strongly advise a seperate tank though fatty for rearing fry..>
its essential!