Thanks John
Woohoo! Good for you, he'll become a little piggy in no time!!
I would not put a ray in with a mbu, reason being, the mbu sleeps/rests on the bottom of the tank at night, and a mbu can kill a sting ray in a second with it's massive chompers... or the ray can kill your mbu.. so not a good mix!!
We've had several tank mates with our mbu, he isn't aggressive, I think that is because we've had tank mates with him his whole life.
Currently we have 2 NTT dats, and 2 IT dats with him, also a spotted raphael catfish and an endilcheri bichir, and there's no problems. I think because the dats are a lot faster then he is. Only thing I can say may be a problem is the other fish do not get as much food because our mbu always seems to find it first lol
We've also had our mbu with...
Clown loach, ornate bichir, delhizi bichir, AT Datnoid, Texas Cichlid, Green Terror, Jack Dempsey, Red Tail Catfish, Tiger Shovelnose Catfish, snakeheads... and that's all.. I think. Not all at once either, of course.
You better post pics!!
What size of tank is he currently in?