Evil albino bristlenose?

[four_by_ken]

In our peacock tank, we have an albino brostlenose that has been in there a long time.  It is about full grown, and is doing great.
In the same tank we had a Blue Panaque.  I notice it was kind of beat up.  It hid a lot, so it got it kind of good.  I took it out... but it was too late and it died a few days later.  Really bummed me out as it was my favorite pleco.

Now, I noticed one of our synodontis, about 4" long... and the larger of the two in the tank was beat up BAD (missing fins, one bloody).  I got it out and is doing ok in a hospital tank.  The other smaller one is totally fine.

Possible that this is from the bristle nose?  I dont see any of the peacocks chasing... the only other is a redtail shark that I cant see being the culprit.

[African cichlid Keeper]

it's got to be your redtail shark. I never had a bristlenose pleco beat up any of my fish.  redtail shark can be nippy.

[Marty]

Yep, the red tail sharks are known to be aggressive.

[four_by_ken]

Really... never would have thought it.   

I'll have to take a picture of the syno... get got beat bad.  Never would have thought a redtail could be THAT nippy.

[jamarini]

Red tail sharks have a reputation for picking on other species if there are not a few or more other red tail sharks in the tank to focus their aggression.

[four_by_ken]

All is good in the tank still.  I think the redtail heard us talking.