Just so you know, fishkeeping is always going to have conflicting information and advice, because it is hard for us to tell how are fish feel to some extent. You can always tell if a fish is sick or not, because the bacteria or fungus or parasite is always going to be documented, and stay the same. You can't tell if he likes this fish to keep him company or another, because most fishes have a diffrent personality then the next. I would say fishkeeping information is more of an opion then anything else.