Angel on the prowl?

Hi all. So my 140L tank is doing well. I am a bit concerned with my neons though. When I first put them in the tank, they were very bright and swam all over the place.
Since I added my large angel, they lost a bit of their color and seem to stay near the bottom of the tank. Could my angel be seen as a predator?
There are about 9 neons, 10 Black neons and 7 harliquins (The harliquins seem to be the bravest) with a few corys/
The other thing that baffles me is that in my other tank, I only have 3 neons and they are really colorful!
Thanks everyone!
Firefly

 

Angels are known predators of neons and other smaller tetras. Not a good mix, especially long term, where the angel will be large enough to eat the neons.

 

As the angel get's bit, the neons will fit in his mouth. this = food.

I had a lovely school of neons with my baby angels. Angels grew up, neons disappeared!

 

dont let the name angels mislead you, they are far from angels

 

Angels will 100000% eat your Neons - happened to me twice (expensive live food)
Even thou you seem to see this mix in many setup - I would never mix them

Bigger Tetras ok - like Congos etc

 

So it is possible that the neons are hiding from it?
Will have to remove him then.

 

yep its possible, their bright colour dont help with hiding as well so maybe thats why they dimming it down a bit

 

Well I got rid of him (returned to the LPS and had put into show tank) and bought some cardinal. The fish seem happier already, bright and colorful.

 

cardinals r much classier ino.. very nice buy.. after getting my cardinals i dont think id go back to neons