urbaninja;2078957; said:I think they are like this because there is sand stuck on their slime coat that they got while digging
That can sometimes fool you into thinking they have ich. I've been fooled a couple of times, panicking until I realized it was just sand, lol.
It's the sudden onset of the lethargic/not eating that would worry me, besides not properly caring for the fry. Not caring for the fry could be from being new parents, but I doubt it. If the eggs got to hatching, the parents should be caring for them by at least gathering them up into one spot.
Again, I hope all ends up well. Good luck.