Introducing SA knife fish to each other.

[Nickintex]

I have a large White Ghost Knife (a mottled color morph of The Black Ghost) In a 55 gallon talk with Angels, Ctenopomas, Geos, and catfish. I know that 2 of the same species of SA knifefish will fight until the loser has part of his tail nipped off. I am curious to know if there is a safe way to introduce other SA knifefish, like glass knives, brown ghosts, regular Black Ghosts, or a trumpet knife to the existing White Ghost who is pretty much dominant of the driftwood caves at the back of my tank. I know they will do ok in large groups, but the problem here is that there exists a territorial and established fish in the tank. Any Info will be appreciated. Thanks.

[stevenallenbarnard]

At one time I had 3 black ghots in my tank. they were all introduced at the same time nd were all the same size. I would see them chasing each other but never any damage. You could always try an egg crate divider to start with.

[justjuice]

it is best just to keep one but what worked for me is moving things around in the tank befor introducing the new knife then moving things back in a day or two and try getting one about the same size.

[cichlid1409]

I would also suggest reaaranging the scape beefore putting in the new fish. and then turn the lights off for a day or two and keep a close eye on them for the first couple days.