Shouldn't be a issue lol. Just may want to make it an odd number of fish in the tank. My curupiras ignores bichirs completely as a threat, even protects them to an extent, if you're into them. Other wise, cichlids, catfish, and other characins are commonly kept with wolves. I have mine with an odoe pike and gold wolf for characins, then the bichirs, and 3 cats.