hey i went back to my lfs and got the name of the fish i wanted to put in with my betta its called a black ghost knife. i decided i would look them up when i got home and no longer think i can get one which is a shame because they are so unique. they can grow up to 60 centimeters so u need like a 75 gallon tank. they also eat blood worms so i think the betta might steal his food. does any one have a BGK?