no... not by fission... though there have been occasional oops with double mouths.
interesting... I've seen them have 2 mouths and stayed that way... never a complete fission. Would love an update on this one from time to time.Not an oops. Its literally ripping itself in 2. It started out with 1 mouth.
Maybe try a time lapse video. Take a picture of it every day at the same time.