"Fish don't need goggles because their eyes are designed to work underwater. They still have the same parts that you do: there's a cornea, an iris and a pupil, the way the light gets in and bounces around and then transmits a signal to their brain so they can see things. Some fish can actually see really well.
The eyes in fishes and human are anatomically similar. Fishes can visualize colors similar to humans. Fish have eyes that have a protective layer on their eyes. Due to the protective layer they can visualize colors much more clearer.
Besides being able to see their prey and recognize their owners, fish also can see a range of colors, since they have color receptors in their eyes. Many species of fish can also see ultraviolet light, which humans can't. In fact, ambon damselfish have UV markings on their faces, which only they can see.
Fish generally have excellent close up vision, but poor distance vision. I think this is why fish tend to stay near their feeding areas. They don't move too far away from a steady food source because they simply have trouble seeing their next meal at any distance.
Overall, a fish's eye is better adapted to see movement and contrast rather than actual detail. Although fish receive visual information from an arc of 360 degrees and thus have better peripheral vision than us, they must look directly at something for it to be in clear focus.
Neurobiologists have long recognized that fish have nervous systems that comprehend and respond to pain. Fish, like “higher vertebrates,” have neurotransmitters such as endorphins that relieve suffering—the only reason for their nervous systems to produce these painkillers is to alleviate pain.
Yes, fish experience both physical and emotional pain. Scientists say that it's likely a different type than what humans experience, but it's pain nonetheless. Fish have nerve cell endings called nociceptors, which alert their bodies to potential harm such as high temperatures, intense pressure, and harmful chemicals.
Yes, fish can hear you talk!
Sounds that are created above water typically do not carry enough force to penetrate the surface tension of the water, so talking on the boat or loud noise may not affect fish as much as your fellow anglers may want you to think. Your voice is unlikely to spook or scare fish away.
The specialised retinas of some nocturnal coral fish result in faster vision and greater sensitivity to dim and bright light. The same adaptation may enable deep-sea animals to see in darkness.
“Fish are more intelligent than they appear. In many areas, such as memory, their cognitive powers match or exceed those of 'higher' vertebrates including non-human primates.” Fish's long-term memories help them keep track of complex social relationships.
Can your pet fish recognize your face? A new study says, Yes, it probably can. Researchers studying archerfish found the fish can tell a familiar human face from dozens of new faces with surprising accuracy. This is a big, big deal.
Fish Will Follow You If You Feed Them
So, when you feed fish, it is quite straightforward that they will follow you. Also, fish in the ocean have probably figured out that people often come with food to feed them. Thus, many cases of the fish following you even when you haven't fed them.
Fish see ⅓ of what they normally see in dirty water. This means you can get away with heavier tippets and they still won't see it.
But the researchers did not know what would happen if the fish encountered a familiar face from unfamiliar angles. Now, in a study described last November in Animal Behaviour, they have demonstrated that the fish can recognize the same face turned to the side by 30, 60 and 90 degrees—a nontrivial task.
There has recently been increasing evidence demonstrating that fish can discriminate between familiar individuals based on facial characteristics (i.e., true individual recognition) and can even identify individual humans faces (e.g., refs. 22–29).
While fish do not sleep in the same way that land mammals sleep, most fish do rest. Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest.
When looking broadly at all the larval species studied, black is the most commonly preferred, followed by no preference for color, and then blue. Blue and white were more preferred by adult fish, but many species also had no preference.
Red. Red lines are also said to become invisible underwater. This comes from the studies that show how red objects lose their color first underwater. On the other hand, divers say that red objects that lose their color become black.
Most fish have only two color-sensing cones in their eyes, compared to the three types humans have. This means that most fish cannot distinguish between red, orange, and yellow colors. However, some species of fish, such as cichlids, possess three color-sensing cones.
So, if the noise around your fish pond or fish tank is too loud, it'll start to hurt your fish when the sound decibels go too high. Furthermore, sudden and loud music can affect your fish quite adversely, mainly when the fish are small in size.
Fish don't really know they're wet. But what about you? Have you ever thought that you might be immersed in an environment and not know it? Like fish are unaware of being in water, many Christians are just as unaware of the postmodern world they live in and the influence it has on their lives.
Not only can your aquarium fish hear you speak, but they can also respond to certain sounds, differentiate different types of music, and speak back to you through their body language.
The wild wriggling and squirming fish do when they're hooked and pulled from the water during catch-and-release fishing isn't just an automatic response—it's a conscious reaction to the pain they feel when a hook pierces their lips, jaws, or body.
In conclusion, fish don't get thirsty like humans or other animals. They have evolved to live in water and have adapted their bodies to regulate the salt and water balance through osmosis and special cells called ionocytes.
Scientists have just observed a thought swimming through the brain of a live fish, and that thought concerned getting something good to eat. Fish and other wild animals appear to think a lot about food: how to obtain it and what to consume.