JUN 23, 2016 12:14 PM PDT

Can Fish Differentiate Between Different Human Faces?

WRITTEN BY: Anthony Bouchard

Fish are often seen as creatures with simple minds. Many even believe that they have short intention spans and short-term memory loss.
 
On the other hand, are fish really as dim-witted as they’re made out to be?
 

A study performed by Australian and UK scientists reveals that fish can probably distinguish between different human faces.

 Image Credit: sh.aquarium.com

A new study published in the journal Scientific Reports suggests that fish have the ability to distinguish between two different human faces, a quality that would require not only a mental capacity large enough to make a differentiating observation, but also that would require a form of intelligence.
 
The study involved the use of archerfish, which are capable of shooting streams of water from its mouth in such a way that it becomes a blob just before it impacts a surface. This is a technique that the archerfish uses to take down bugs and other prey in the wild, and this type of fish was chosen for the job because they can indicate a choice very clearly.
 
After displaying two separate human faces each time from an array of over 44 different face sets, the archerfish would then respond to the individual faces by shooting their little water jets at either one face or the other to indicate their choice.
 


Training for this study took anywhere from a few days to a few weeks per fish to teach them to actually spit at a certain face.
 
After selecting one, the archerfish were presented with a treat, and just as you would train a dog, the archerfish were eventually trained to select one specific face and were treated every time they selected it.
 
Soon enough, it became clear that the archerfish would only react to the face that it would get a treat from, and they were able to select the faces with anywhere from 77-89% accuracy, which is remarkably high.
 
The findings reveal that the archerfish were capable of differentiating between the different types of faces, and may have misjudged them only a few times either because a face looked similar to another, or because the fish believed they would get a treat from it.
 
This probably means that your pet fish knows who you are and knows your face, but it’s unknown if different species of fish have the same level of intelligence or not.

Source: CNN, Wikipedia

About the Author
Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
JUN 06, 2022
Plants & Animals
Preventing Food Waste with Digital Citrus Fruits
JUN 06, 2022
Preventing Food Waste with Digital Citrus Fruits
Food waste is an unfortunate and common occurrence. While the vast majority of food waste comes from unused food in home ...
JUN 12, 2022
Plants & Animals
Vegan Diet Rich in Legumes Helps with Weight Loss
JUN 12, 2022
Vegan Diet Rich in Legumes Helps with Weight Loss
New research conducted by the Physicians Committee for Responsible Medicine suggests that a vegan diet offers a range of ...
JUN 22, 2022
Microbiology
How Mites That Live on Our Faces are Evolving to Become Symbionts
JUN 22, 2022
How Mites That Live on Our Faces are Evolving to Become Symbionts
Our bodies contain huge numbers of microbes - inside and out. We even have face mites. New research has shown that the m ...
JUL 21, 2022
Plants & Animals
How plants produce their own aspirin to protect themselves from environmental hazards
JUL 21, 2022
How plants produce their own aspirin to protect themselves from environmental hazards
A recent study from the University of California, Riverside (UCR) and published in Science Advances discusses how plants ...
JUL 25, 2022
Technology
Tools of the Trade: Ancient tattoos brought to life
JUL 25, 2022
Tools of the Trade: Ancient tattoos brought to life
With little to no information in the archaeological record regarding tattoos, placing their origin has proven difficult. ...
AUG 09, 2022
Earth & The Environment
Tropical ozone hole larger than Antarctic ozone hole
AUG 09, 2022
Tropical ozone hole larger than Antarctic ozone hole
In a recent single-author study published in AIP Advances, Qing-Bin Lu, a scientist from the University of Waterloo in O ...
Loading Comments...