Is this normal?

[Prez1]

Hello,

I have 2 true percs and the male has been remaining verticle in the corner of the tank often. They are both eating fine and come out for awhile when I first get home from work. Just curious if it's normal behavior.

Video --- http://tinypic.com/r/2lnww9v/7

Thank you!

 

[mchiareli]

look stressed to me.

 

[Prez1]

I should have also noted that they have been in the tank for a bit over a month now. They are currently the only fish in the tank. Nothing else in there is causing them stress.

Tank parameters have been good at pH= 8.2 Salinity= 1.023/4 temp= 80 to 80.5 degF ammonia=0 nitrites= 0 nitrates= 5-10ppm kDH=210.