Trout can see humans from in the water so you should wear camouflage clothing and move with stealth so you do not spook them. A scared fish does not feed and will move away.
- Facts about trout
With high sensitivity to some colors (red, blue, green), the trout have very good sight and are quick to spot the fishing line. They have both monocular and binocular vision, which means they can see in the opposite direction.
When the light is intense, trout are prone to see very clearly around, as opposed to dark conditions. Now what’s important to consider is that the way we define things, light, colors, conditions, are not perceived the same way by trout. And it’s obvious, human’s eye is different from that of trout.
But we can have an idea about these differences in perception. To understand the notion, think of people listening to music. While some prefer it louder, others are disturbed by the noise. It depends on how both categories perceive external factors. So returning to trout, what appears very close can be very far. At a depth of 10 meters or more, light is absorbed for the most part, and the red spectrum that trout responds to disappears.
- Refraction & Trout vision
If we want to know what trout see, we should keep in mind the concept of refraction. The term refraction can refer to 1) phenomenon through which a wave (light, radio, etc.) passes from one medium to another or 2) the way the focusing features of the eyes are measured.
Applying this phenomenon on water, we can see that things slightly bend, meaning that what appears to be in a place can actually be in another.
- Trout vision
The brain part of the trout that is accountable for vision is greater than all the others. Trout have elongated pupils, and that helps them with spotting food.
The area surrounding the pupil allows their eyes movement in multiple directions. Also, trout have a so-called window of vision or cone, and they can see from it. In other words, the sight they have through that cone has a certain range, meaning that outside that cone, they can’t see.
Based on the available information about trout, we know that their eyes are mostly on top of their head, so their window of vision would be oriented upwards. Another interesting fact about this is that the deeper the water, the wider the window of vision.
Now, from a human’s perspective: if you look at water and you see the trout close enough to the surface, it’s easier to catch because it’s closer to you.
But from the trout perspective, being not so deep underwater means a smaller range of vision and so, harder to hide from you. So it’s plausible to assume that they can see you if they’re deep underwater and you are in their vision range.
Highly appreciated among anglers and the world’s finest cuisines, trout have special features that make them stand out from the crowd.
To catch, most anglers pay great attention to weather conditions, equipment, and place. But there are also other things that matter. The angler has to establish a connection with the fish. Or break all the chances to create one. An angler needs to see the fish, to place himself well, but also to take care not to be seen back by the fish.
With all these things considered and clarified, it is safe to say that yes, trout can see you, depending on some factors, most of them being related to anatomic features as well as the environment. The information presented above is just a few of them but among the most important. Whether you are interested in fishing trout or just curious about their particularities, trout as a species is one of the most complex, so further research is a good idea if you want to find out more curious things about their nature.
Sight, in terms of primary senses, plays a key role for every creature in this world, no matter if we talk about humans or fish. Indeed, without the sense of sight, survival is possible, it’s not something that we couldn’t live without if the circumstances obliged us. But it’s a sure thing that sight gives us, as much as it gives fish, the optimal conditions for sustainability.