Nort: Do not panic. Its relatively easy to keep this wonderful fish. He does grow quite large under proper conditions so, you must keep this in mind.
Firstly, he is nocturnal, so the best time to feed is at evening or just before lights out. Mine has a mixed diet of frozen bloodworms, brine shrimp, good old market shrimp (cut into little bitty pieces), and frozen daphnia. But, he'll get along just fine on bloodworms.
You can keep him with just about any fish, providing he has space and a cave or a place to hide from the light during the day. The water must be very clean. The temperature should be steady, he prefers cooler temps around 75 or so, but I'm keeping mine at about 78 degrees with no trouble.
Mine is in a 66g tank and he is even sharing it with 3 platy/guppy cross breed babies that are about 1/4 inch long. He is not overly aggressive at 6 inches long now and seems to always be sharing the company of my pictus catfish and clown pleco. They sleep together and party together at night.
You will have to consider the growth factor and what to do in the event he gets to big for your tank. That is the only drawback I can see to keeping him. So, good luck, he is a very nice fish and can even be handfed with patience.
