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 02, 2020
Plants & Animals
Why Do So Many Animals Have Different Styles of Headgear?
JUN 02, 2020
Why Do So Many Animals Have Different Styles of Headgear?
A substantial number of animals have evolved to have ornate and functional headgear that can help them defend themselves ...
JUL 18, 2020
Cancer
Clinical trials go forth for osteosarcoma in dogs and glioblastoma multiforme in humans using the same precision medicine
JUL 18, 2020
Clinical trials go forth for osteosarcoma in dogs and glioblastoma multiforme in humans using the same precision medicine
A development in precision medicine in cancer treatment for dogs has led to a similar advancement in cancer treatment fo ...
AUG 05, 2020
Microbiology
Revealing the Secrets of a Symbiotic Relationship
AUG 05, 2020
Revealing the Secrets of a Symbiotic Relationship
Some salamanders (Ambystoma maculatum) have a strange relationship with a type of alga (Oophila amblystomatis): they are ...
AUG 06, 2020
Plants & Animals
Swine Fever Threatens Critically Endangered Indian Hogs
AUG 06, 2020
Swine Fever Threatens Critically Endangered Indian Hogs
The Associated Press reports that the world's smallest and rarest wild pig species is undergoing its own virus lockd ...
SEP 06, 2020
Technology
Can Math Determine The Sex of a Dinosaur?
SEP 06, 2020
Can Math Determine The Sex of a Dinosaur?
Can math tell us about the gender differences in dinosaurs? A new study published a novel statistical analysis that esti ...
SEP 24, 2020
Plants & Animals
Cuvier's Beaked Whale Sets New Diving Record
SEP 24, 2020
Cuvier's Beaked Whale Sets New Diving Record
Marine mammals are uniquely adapted to dive to incredible depths. New research from Duke University Marine Laboratory do ...
Loading Comments...