can he keep it with goldies???

No,he definately cannot.They have totally different needs and requirements.

You might want to post this in the "Compatible fish" section. I would say a big no to this though. They are known to be very aggressive fish. From what I've read just one needs 90 gallons!!!

The following are ok with Goldfish........

http://www.kokosgoldfish.com/comfish.html

Absolutely not, a red DEVIL will probably rip a goldfish apart.