Need help with tank mate advice for Leopard Bush Fish!!!

[Kris33]

I've got a quick question for ANYONE else can help!! I have two Leopard Ctenopoma's also known as the Leopard Bush Fish and one was bullying the other as well as of course eating every other fish (that's what they are predator fish) ones in my 60 others in my 40 they are both about 3-5" max! Is there any suggestions on tank mates that you know would be a good idea... The ones I'm aware of isn't really what I'm looking for as far as the Congo Tetra's Cory's Syno's etc I already have those I'm looking for advice on other fish that'll work I have 5 tanks so I KNOW this is a fish that gets HUGE as well so that being said? If anyone else wants to please help?? My one that's in the 60 is literally by himself with Cory's and two Rainbows just looking for ideas please!! Thanks in advance!!