Didn't do any water parameter test. I just changed the water before the photo taken. It was cloudy due to some dead ghost shrimp. And it eats a lot, I see no problem. It prefer hunting the ghost shrimp rather than the blood worm. And... that's thin? I thought it's a little bulky after eating some ghost shrimp. After all, it can eat whenever it want.
Also, if you haven't, you can try to zoom in by opening the pic, I posted the large resolution and I don't think I can give a better shot than that one. Only got a simple 3M pixel camera