Protopterus Dolloi..........called the neighbor. That is the scientific name for the type that he keeps. In terms of other types of Lungfish or if there even are any...I cannot say as I do not keep these fish or know much about them....My neighbor keeps both of his in a 500g. He has an adult silver arowana (3.5-4' long), peacock bass (the king of the tank), a humungo red-belly pacu and an assortment of others. The lungfish don't have a history bothering the other fish....my neighbor's case being the only source of information I have.....I apologize if I came off as if I was trying to profess on the subject.
No need to apologize man, I am so happy that you suggested the lung fish!!I have a good feeling I am going to be getting one to finish off my stock. just looked at them and They sure as hell fit the bill for a gnarly looking fish!