I wouldn't put a ghost knife in there, mine got bullied to death by my blood parrots even with 4 hiding places in the tank, so i can imagine those midevils doing the same thing except worse
Alright so I picked up the giant BGK. Took all cichlids out of the tank. Here are some pictures. I did do some messing with the camera settings to see what works best for fish pictures.
Swallowing a rosy in this pic
This kind of shows how big the BGK is. This is a little cave in the corner of the 125. Notice you can see its tail on one end and its head sticking out the other side. He didn't want to come out during picture time.
Suction-cupped a tube to the side of the tank, hopefully the BGK will take refuge in this great viewing area
I am sorry for all the pictures, I hope it didn't kill your computer.