• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Thursday, August 21, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Chemistry

Fish school by randomly copying each other, rather than following the group

Bioengineer by Bioengineer
March 2, 2020
in Chemistry
Reading Time: 2 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

IMAGE

Credit: Photo by Milos Prelevic on Unsplash.

Fish school by copying each other and changing directions randomly, rather than calculating and adapting to an average direction of the group, a group of scientists co-led by UNSW has shown.

In a study published today in Nature Physics, an international team from Australia, India and UK has shed light on the behavioural dynamics that govern alignment, or collective motion, of cichlid fish – offering new insights into the dynamics of schooling, and potentially the coordinated behaviour of other animals.

“In the fish that we have studied, schooling turns out to be noise-induced. It’s not what anyone traditionally thought it was,” says Dr Richard Morris from UNSW Science, co-leader of the study and EMBL Australia group leader in UNSW’s Single Molecule Science.

“Noise, in this setting, is simply the randomness arising from interactions between individual fish.”

In the study, the researchers present the first experimental evidence of noise-induced ordering, which previously only existed as a theoretical possibility. The interdisciplinary team of ecologists, physicists and mathematicians achieved this by combining the capabilities of their scientific disciplines to integrate experiments with computer simulations and analysis.

“Everyone’s been aware of noise-induced phenomena, theoretically, but it’s quite rare to find in practice. You can only observe it when the individuals in a study can actually make decisions. For example, you wouldn’t find this type of noise-induced behaviour studying electrons or particles,” says Dr Morris.

This new model proposed contradicts the standard ‘moving average’ theories for schooling and herding behaviour, which assume that the animals are capable of estimating the overall direction of the group.

“Every fish only interacts with one other fish at any given time. They either spontaneously change direction, or copy the direction of a different fish. Calculating an average direction of the group – which was the popular theory until now – is likely too complicated for a fish to compute,” explains Dr Morris.

To study the behavioural dynamics, the researchers filmed schools of 15, 30 and 60 cichlid fish, tracking their trajectories to analyse the mechanism behind mutual alignment, or schooling.

“Smaller groups of fish schooled more coherently than large groups. This is counterintuitive, since the randomness, or noise, from individual interactions plays a bigger role in smaller groups than larger ones,” Dr Morris says.

When researchers interpret data, noise is usually an unrelated factor that obscures and distracts from the information, like glare from the sun that you would try to eliminate to get a clearer photo.

In this case, Dr Morris explains that the random copying between pairs of fish gives rise to a different class of noise, and is actually what drives their highly coordinated behaviour. This new insight highlights the importance of noise, showing that noise may encode some important information about behavioural dynamics of fish and other animals.

“Here the signal is the noise. If you ignored the fluctuations completely, you couldn’t explain schooling at all.”

Beyond fish behaviour, the discovery has the power to reshape the understanding of collective motion in animals, and calls for a revision of how noise is treated in studies of behaviour dynamics.

###

Media Contact
Isabelle Dubach
[email protected]
61-432-307-244

Tags: BiologyChemistry/Physics/Materials SciencesEcology/EnvironmentMarine/Freshwater BiologyMathematics/Statistics
Share12Tweet8Share2ShareShareShare2

Related Posts

The Evolution of Metalenses: From Single Devices to Integrated Arrays

The Evolution of Metalenses: From Single Devices to Integrated Arrays

August 21, 2025
Zigzag Graphene Nanoribbons with Porphyrin Edges

Zigzag Graphene Nanoribbons with Porphyrin Edges

August 21, 2025

Bending Light: UNamur and Stanford Unite to Revolutionize Photonic Devices

August 21, 2025

On-Chip All-Dielectric Metasurface Enables Creation of Topological Exceptional Points

August 21, 2025
Please login to join discussion

POPULAR NEWS

  • blank

    Molecules in Focus: Capturing the Timeless Dance of Particles

    141 shares
    Share 56 Tweet 35
  • New Drug Formulation Transforms Intravenous Treatments into Rapid Injections

    114 shares
    Share 46 Tweet 29
  • Neuropsychiatric Risks Linked to COVID-19 Revealed

    81 shares
    Share 32 Tweet 20
  • Modified DASH Diet Reduces Blood Sugar Levels in Adults with Type 2 Diabetes, Clinical Trial Finds

    60 shares
    Share 24 Tweet 15

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

STN1 Drives Pancreatic Cancer Metastasis via ZEB1

Anxiety, Anxiety Medications Linked to Parkinson’s Risk

Celebrating 30 Years of Nanoimprint Lithography: Pioneering a New Era in Nanomanufacturing

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.