I'd advise against feeding beefheart as a staple food. Even with a bottom feeder in the tank it is tough on your water chemistry IMO. It's fine for an occasional treat. I used to feed BH and chunks of fish filets regularly, but hardly use these anymore.
For my jag I feed raw uncooked shrimp for the main staple, supplemented with krill, earthworms, and occasional flakes and pellets. He prefers the shrimp and earthworms over the other foods.
The shrimp is fairly cheap when compared to the other food. I pay 8-10$ for 2 lbs. of raw frozen shell on shrimp at Wal-Mart. Just thaw, peel and serve. My fish eat abot a pound a month.
Earthworms I buy at a local bait shop. They breed their own worms, and are packaged in foam containers with newspaper and some gray soil rather than regular dirt. Much cleaner and less messy IMO. Just squeeze the worm from tip to tail to squirt out the junk inside and feed. Very clean and easy!
I buy my krill frozen from the pet shop. Around $11 for the large flat pack.
The pellets I use I buy from a dispenser at the pet store. Save the original container and re-fill it when you run out. Don't know what brand, just labeled as cichlid pellets. The flakes I feed are Wardley's cichlid flakes.
There are lots of different foods your jag can eat. These are just the methods I use because I find them easy, cost effective, and the fish seem happy and healthy.
Good luck with whatever you decide
