You must have a lot of worms in your tank :~pWell my fishes eat mainly pellets. Some frozen, a variety of frozen for my carnivores. But the proof is in the pudding, not words.
Here are pictures of my fishes. I think they are extremely heathy. There is no way I can feed adequate variety with live and frozen food if that is all I feed my tank.
There is no way the food we feed our tank is “natural”. That is where the science of feed come in. It does not matter the source of the nutrients is terrestrial, just is the nutrients are what the animals needed?