Black Devil Catfish/ Crystal Eye/ Wyckii Catfish are pretty mean. Territory is the big issue with them. If the Jardini or any other fish goes down into or around it's home,it's greeted with a mouth wide open, full out charge towards the intrusive fish . I kept mine in a community tank for years. Had one of nearly everything in with it at one time or another. Everything from VATF to Arowanas. Never had too much trouble. Like the wise people before me stated, the bigger the tank,the better. Although ugly, a PVC coupling that is shaped like a Y ,has worked well for me in the past as a sanctuary/home for lots of different kinds of bottom dwellers. Finally, my gut says you can get away with it,but I bet they don't get along perfectly. Just my opinion. Thanks.
