I have a 75 gallon and a 100 gallon aquarium, and I would like to know how many rope fish and Senegal bichirs I can keep together in each tank (if possible). I don't think that aggression will be a problem, because the rope fish will be larger than the bichir. I would prefer to keep them in my 75 gallon, and both tanks will be heavily planted with a cave system for the rope fish.