This ability to use their mouth like a water pistol is the means by which trained archerfish were able to make selections between two images of human faces. The trained archerfish were able to correctly select the familiar face 81% of the time.
Angelfish are a particularly bright species of fish that will learn to recognize their owner and will readily eat out of a person's hand. Angelfish will often form lifelong connections with another angelfish and the two will stay with each other every second of every day.
The Batfish – Clowns of the Sea
Have you ever wondered to yourself “What is the friendliest fish in the ocean?” Well, wonder no more! The answer to this question is actually quite obvious, it's the ever so curious batfish.
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 fish, a Midas Cichlid, appears to approach the person's hands looking for a scratch -- something like a puppy would -- and even returns for more.
Tiger Oscar Fish
The Tiger Oscar is an African cichlid and is known to be a highly intelligent fish in the aquarium hobby. Oscars are fondly known by their owners as “water dogs” because they are interactive fish that act with purpose.
Fish Can Recognize Familiar Faces
Anecdotal evidence, and one study done on archerfish, suggests they can, Balcombe notes. Many fish owners swear that their pets will ignore guests at a party, say, but swarm to the side of the aquarium once their owner—or the person that feeds them most consistently—comes near.
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.
Researchers have found that fish recognize each other and gather information by eavesdropping. They're capable of remembering past social interactions that they've had with other fish, and they show affection by rubbing against each other.
Touching and grabbing can also be stressful to fish because they may sense your movement as an attack and begin to panic, which could cause damage to their bodies in an attempt to flee.
Butterfly Fish: a mighty lover
They love deeply, and courtship between the pair is prolonged and passionate. The fish will commonly circle one another in a head-to-tail pattern until one break and flees, followed by the other. When they find a partner, they travel, hunt, and mate together for the rest of their lives.
When it comes to personality, puffers just take the prize. Often described as 'puppy-like' and very intelligent, they are shy at first but seem to be able to recognize their owner after a while and will actively beg for food whenever this specific person enters the room.
It's a way for them to interact, and it can be fun for them. They also might be working on growing their little families in the near future. One fish might try to chase another fish out of its territory, but doesn't actually plan to hurt the trespasser if it doesn't have to.
An environment with a lot of noise or high traffic is not good for placing a fish tank. Shy away from televisions, speakers, entry ways and doors. Vibrations created by these noises, especially opening and closing doors, will shock fish and can lead to an early death.
Noise which can disturb the natural behaviour of fish
Fish is extremely sensitive to low-frequency vibrations, below some 10s of Herz. If the sound source is sufficiently intense, fish usually respond by swimming away from the source.
The roar of boat engines and other manmade sources of loud noise can grate on our ears, but they also impact fish living underwater.
Like humans, even fish have instinctual feelings. They are very alert to their surroundings, and sudden movements irk them a lot. So, when they detect motion in the form of you, they will try to look at the source. Of course, it doesn't mean anything, but it enables you to bond with your betta.
What color does fish see best? Most fish can't see colors in the same way that humans can. They rely more on detecting contrast and brightness than they do on color. The colors that are easiest for fish to detect are likely the darker shades of blue, green, and violet.
Because fish often rely upon a complex web of senses beyond sight, many signals - chemical, hormonal, activity and sound - will attracts them and they know when you are, and will trail you, long before you see them.
According to Culum Brown from Macquarie University, "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 hold records for the relative brain weights of vertebrates.
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.
Research suggests that improved memory is just one of many brain-boosting benefits associated with eating more fish. You've likely heard that omega-3 fatty acids are good for your health. But one in particular, docosahexaenoic acid, or DHA, goes straight to your head.