Fighting plecos

[Karen03]

Do I need to be concerned about fighting between 2 plecos? I've just introduced a gold nugget pleco into the tank and the original pleco, a blue panaque, doesn't like him. Right now they are both about 3" long. I've had the blue panaque for about 7 months. Gold nugget has been in the tank for 5 days.

The tank is 75 gallons. There are two large pieces of driftwood -- one at each end, and a large fake coral rock at one end. Blue panaque claimed the coral rock. I've never seen him leave it, except to chase away gold nugget. Gold nugget has decided to hang out on the piece of driftwood right next to the coral rock. So they are both at one end of the tank, usually just a few inches away from each other.

Should I be concerned? I've read stories in forums about plecos killing each other?! http://ovas.ca/forum/Smileys/blue/huh.gif
If I should be concerned, I thought I'd try switching the positions of the driftwood. Did gold nugget choose his piece of driftwood based on the driftwood itself or based on its location?

Thanks for any advice. http://ovas.ca/forum/Smileys/blue/grin.gif

Karen