frozen

What and how often should I feed my circumcinctus? I've had him for a month now, hes about 5 years old. The past owner fed him frozen bloodworms, he loves them and so do the other fish. I have bought 5 packets of frozen daphnia which he isnt interested in at all. I'm happy just feeding him...

Hi Guys,   I have a relatively new discus aquarium, (4-5 days) and I was watching my 3 10cm discus eat just now and they weren't really eating. I put in 2 frozen "Discus Diet" cubes. They sank to the bottom then 2 of them bit them a couple of times then all three swam quickly to the other side...