I just put 2 discus (1 cobalt, 1 turquoise) into a community tank of 1 dwarf gourami, 6 harlequin rasboras, 2 raphael catfish, and 1 green cory. It's a 30-gal upright tank. I keep it at 84 degrees. The introduction of the discus has not gone completely smoothly so I've got a few questions:

1. One discus is constantly chasing and nipping the other. Is this normal?

2. Both discus hide behind the filter, the heater, or in the sword plant as soon as I walk in the room. Is this normal?

3. The dwarf gourami is much much smaller than the discus but is nipping both of them. I knew DG were territorial but I didn't know they were THAT ballsy.

These behaviors have me wondering if the tank is overstocked or if the fluorescent lighting is too strong for the discus. Any ideas?

Here's a few pics of the setup:

(IMG:http://i15.photobucket.com/albums/a353/jstsouthofsanity/DSC01316.jpg)

(IMG:http://i15.photobucket.com/albums/a353/jstsouthofsanity/DSC01305.jpg)

(IMG:http://i15.photobucket.com/albums/a353/jstsouthofsanity/DSC01321.jpg)

Thanks for the help!
Luke