Some info on beefheart and meats from warmblooded animals of what we buy in our stores. If you must and feel you want to feed beefheart or other meat, make sure they are organic. Research is now being done that animal meat that have been injected with antibiotic's and hormones can effect your fish. Many fish are becoming immune to antibiotics that we use to help cure common bacterial infections. Also my research showed that when the fish are younger 2-4 inches can tolerate it well but as they get bigger the fishes digestive system slows down and has a harder time breaking up the meat and possibly causing blockages and other digestive issues. But with that said as long as a well rounded diet, organic meat (personally I'd find other foods**) is given your fish should not have any problems.
Martin A. Moe states ...Fish are cold blooded and all digestion reactions takes place at 70 to 80F, the temp of aquarium water. Thus they may not be able to efficiently digest or use the types of fats present in the flesh of warm blooded animals. They are much better off with the flesh of animals that are similar to their normal prey.
**Other foods
Fish like cod, salmon, tuna, haddock, sole just to name a few are very good replacements for warm blooded meats.
