What about common carp? It does seem that when anyone had gotten their baits really right then a lot more of those 'un-caught monsters in lakes etc would seem as if by magic rather then remaining un-caught for many years. Apparently human adults can detect 30,000 smells along with a child 10,000, which shows this chemoreception changes despite having us. Some 'natural feeding common carp may literally haven't any need to establish a capacity to detect other smells or tastes apart from the natural. According to its DNA programming it could only must detect perhaps 500 natural tastes or smells to completely exploit its natural food resources. It seems logical then that they're going to not be by any means aware that our angling baits are food wherever natural live foods are not used is bait. In the past, silk weed has become known to catch fish, why must this become a surprise?
My personal results using live natural baits on the hook rig with conventional boilie baits provides a strong argument for utilizing these natural baits contained in the approach to catch rarely caught fish. The electromagnetic field given off using a bait may possibly cause response by changing the electromagnetic state of chemoreception along with cells which pass around this 'signal right to the brain possibly more by electromagnetism rather than electrochemistry. I have knowledge of giving restorative energy and reports have proven the 'Reiki energy transfer actually changes DNA in positive ways, equally as air pollution and water pollution does in negative ways in humans. Common carp having different DNA to mirror carp can simply have different requirements or parameters of electromagnetic radiation which are evolved to detect emitted off their natural food.
In fact it is rather frequent that rarely caught natural feeding commons are hooked using a lobworm, lot of red worms or on maggots like the legendary 'Herman of Warmwell UK fame. Perhaps the goal wasn't the amino acids given off or even the movement in the bait that is detected with natural baits, but much more importantly, the living organism's electrical field emitted. We are all 'batteries' as a result, and still have our own electromagnetic fields. Those nearest to the physical body will be the strongest, but there are additional levels or layers much like the layers of your onion which might be far more subtle even as we get further away from the body. One explanation of light, while it is far from being understood, is that it is electromagnetic radiation.