I have used a beefheart formula for almost thirty years and have never seen a fish bloated from it.
Beef heart is very in expensive to make and is one of the best foods possible to feed your fish, in my opinion, especially for discus and fry. This is just a quick video explaining and showing the process I go through to make fish food!
"Fishes are unable to utilize fat from warm-blooded animals for energy use. As a result, these fats build up in the liver, and over time will result in degeneration of their liver. For this reason, meat from any warm-blooded animal, and especially beef heart, is bad for your fishes."
Beef Heart Recipe for Tropical Fish and Oscars - Oscar Fish Care
Beef heart as fish food question - The Planted Tank Forum
Now, I am well aware that beefheart is the definite champ for cost and lean protein for fish, BUT in my case, it appears to be horribly messy and I dont think my family would appreciate me blowing up the kitchen for hours on end cleaning meat making food for my fish, and in larger quantities than I can really use at that.So after a bit of searching for a lean, easily digestible and effective protein source, I happened across 99% fat free ground turkey! Now just thinking about it sounds a fair bit excessive compared to cheap beefheart but ive always spent a good amount of money of food for myself and prepared foods for my fish, the small quantities i need would be no problem at all.I have learned from an article on African Cichlids that meat from any warm-blooded animal, and especially beef heart, is bad for our fish ...... so how about our Discus?I haven't even tried raising discus w/o beefheart. It definitely helps put some size on 'em as part of a varied diet. For fish 3" & up, I highly recommend Carol's salad shooter beefheart method covered in this section's sticky threads. It's a bit of a pain to prepare, but it's the cleanest food my fish get- little culiques of pure beefheart. Push hard feeding it into the salad shooter- when it sounds like it's yelping, you're doing it right...Is there anyone on here that uses ground turkey or poultry in general as a main feed for their fish? If not, I suppose I will just wing it and modify a beefheart recipe to take the turkey.I actually use peas, carrots, and spinach from baby food. Its already pureed and easily digestable. Any variation of this would be a much more complete nutrition for the fish resulting in far better health and growth than just beef heart itself, IMHO...