Company for Red Devil

Mine is the same way. He hates everything and everyone. Last year I picked up a female from my lfs and it looked like they would get along. I put her in with him and they were cool all day. I went to school that night, came home 3 hours later and there was barely enough of her to be able to tell she was a red devil.
 
I was thinking of putting a RD in a 125 by himself since I hear they don't "play nice"

Now does that go for bottom dwellers too?? (i.e.. no plecos or catfish??)

1 fish in a 6 foot tank seems a waste, but if that's the best thing to avoid trouble, I'll do it.
 
usually you can get away with a pleco (but not always) just make sure you give it a place to hide once in a while.
 
I've tried plecos twice with no luck. They had a large cave to hide in. They used it to hide but the rd would wait and ambush them when they came out. I took them out and put them in other tanks. The only luck I have had is when my wife accidentally put a clown loach in with him. She bought me a clown loach and put it in the wrong tank. They were in the same tank for two days before I noticed and the loach had no damage done to it.
 
i would say if u wanna put a pleco in there he should be bigger than the RD, a lot bigger
 
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