Potters angel and Clown hiding together

[kennygg]

Anyone have an idea about why this is happening?

 

[Brew12]

Anyone have an idea about why this is happening?

How many other fish are in the tank with them?
How long have they been in the tank?

 

[USMC 4 LIFE]

I have a potters angel. It was a bit shy at first and would hide behind rocks but it eventually came out. Not sure why they both are hiding together.