I read Annes informative poly section. I have a Discus tank (which she says a sen would be fine in). Will they also be ok with my Microgeophagus ramirezi? I only know passing info on sens from my time working in a lfs years ago. Oh and since I am writing what about the tetra background fish like cardinals?? I'd really like to get a bichir and that is the tank I'd like to put him in. Thanks for any info., 
