Dave:
Two thoughts:
Bristle noses are pretty to me in their ugly kind of way.
My limited experience with them to date is that they are excellent bottom cleaners, good algae cleaners (at least on the walls of the tank) and appear to have at least some personality.
Please refer to the following for habitat as well as other information:
http://www.planetcatfish.com/catelog...?species_id=49
Queen Arabesques are very, very pretty fish.
I enjoy them but most folks do not as they are rarely seen and are principally carnivores.
Please refer to the following for habitat as well as other information:
http://www.planetcatfish.com/catelog...species_id=229
TR