Related Experiment Video
Updated: Mar 12, 2026
05:12
Swimming Performance Assessment in Fishes
Published on: May 20, 2011
26.0K
Synchronization and collective swimming patterns in fish (Hemigrammus bleheri)
I Ashraf1, R Godoy-Diana2, J Halloy3
1Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH), UMR CNRS 7636, PSL-ESPCI Paris, Sorbonne Université-UPMC-Univ. Paris 06, Sorbonne Paris Cité-UPD-Univ. Paris 07, 10 rue Vauquelin, 75005 Paris, France.
Journal of the Royal Society, Interface
|November 1, 2016
Summary
Red nose tetra fish exhibit synchronized swimming behaviors, like in-phase and out-phase patterns. This synchronization depends on swimming speed and hydrodynamic forces, forming the basis of collective fish schooling.
Area of Science:
- Hydrodynamics
- Animal Behavior
- Biophysics
Background:
- Fish schooling is a complex behavior involving coordinated movements.
- Understanding inter-fish interactions is key to explaining collective motion in aquatic environments.
Purpose of the Study:
- To investigate the synchronization mechanisms in red nose tetra (Hemigrammus bleheri) pairs.
- To analyze the role of hydrodynamic forces and swimming speed in fish synchronization.
- To determine how nearest-neighbor interactions contribute to group schooling patterns.
Main Methods:
- Observation of red nose tetra pairs and groups in uniform flow.
- Spatio-temporal analysis of fish swimming modes (in-phase, out-phase).
- Correlation analysis between synchronization states, swimming speed, and hydrodynamic pressure.
Main Results:
- Evidence of 'in-phase' and 'out-phase' synchronization in fish pairs.
- Synchronization transition is linked to swimming speed and hydrodynamic pressure.
- Characterization of inter-fish distances in synchronized pairs and groups.
Conclusions:
- Nearest-neighbor interactions are fundamental building blocks of collective fish swimming.
- Hydrodynamic interactions and speed significantly influence fish synchronization.
- The study provides insights into the physics governing fish schooling behavior.
Related Concept Videos
01:06Fixed Action Patterns
18.0K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
18.0K
02:32Osmoregulation in Fishes
54.5K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
54.5K