I have just recently set up a new freshwater tank and used feeder guppies for the cycling process; all went well and added my first new permanent residents last night, a Rainbow Shark and a Black Knife Ghoast. All seems to be well accept the ghoast isn't swimming around very much and lying on his side quite often. I have never had a ghoast before and am wondering if this is normal behavior? I'll be keeping a close eye on him all day!