Zebrafish Swim Tunnel
Controlled-flow swimming chamber for zebrafish exercise studies and motor function assessment, featuring adjustable water velocity from 4-35 cm/s in a transparent 30 cm test section.
Louise Corscadden, PhD
Director of Science · ConductScience
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The Zebrafish Swim Tunnel is a specialized aquatic exercise apparatus designed for controlled swimming performance studies in zebrafish. The system features a 10-liter rectangular tank with a transparent tunnel-shaped test section measuring 30 cm × 10 cm × 10 cm, enabling direct observation of swimming behavior. An AC motor-driven propeller system with electronic control provides adjustable water flow velocities ranging from 4-35 cm/s, allowing researchers to apply graduated swimming challenges and exercise protocols.
This apparatus is specifically engineered for aging research, exercise physiology studies, and motor function assessment in zebrafish. The controlled flow environment enables standardized swim-against-current protocols, making it an essential tool for investigating the effects of exercise interventions on swimming performance, endurance capacity, and age-related motor decline in this important vertebrate model organism.
Included Components
- 1× Swim tunnel tank (transparent, 10-liter capacity)
- 1× Propeller motor (built into the tunnel)
- 1× Control box with electronic flow controller
- 1× Flow sensor
- 1× Temperature sensor
- 1× Air pump
- 3× Connection cables (control box to sensors and motor)
- 1× USB drive with software and hardware manuals
Software
The swim tunnel comes with a standard software package for controlling flow velocity and monitoring sensor readings. For advanced behavioral analysis including fish location tracking, speed measurement, and distance travelled, the system is compatible with ConductVision, our AI-powered video tracking software capable of simultaneously tracking 15+ fish at 30 frames per second with 95%+ accuracy.
How It Works
The swim tunnel operates on the principle of controlled water flow generation to create standardized swimming challenges. The AC motor drives a propeller system that creates unidirectional water flow through the tunnel-shaped test section. Fish are placed in the test chamber and must swim continuously against the current to maintain position, with flow velocity controlled electronically from 4-35 cm/s.
The transparent test section design allows for direct behavioral observation and video recording of swimming kinematics. As flow velocity increases, fish must increase their swimming effort to avoid being swept to the rear of the chamber. Critical swimming speed (Ucrit) is determined by incrementally increasing flow velocity until the fish can no longer maintain position against the current.
The rectangular buffer tank provides water circulation and maintains stable flow conditions throughout the test section. This design ensures laminar flow characteristics and eliminates turbulence that could confound swimming performance measurements, enabling precise quantification of locomotor capacity and exercise response in zebrafish.
Features & Benefits
flow_velocity_range
- 4-35 cm/s
tank_shape
- rectangular
test_section_shape
- tunnel-shaped
tank_transparency
- clear
test_section_transparency
- transparent
propeller_control
- electronic controller
Behavioral Construct
- Swimming Performance
- Exercise Capacity
- Motor Endurance
Automation Level
- semi-automated
Capacity
- 10 liter
Species
- Zebrafish
motor_type
- AC motor
Dimensions
- 30 cm x 10 cm x 10 cm
Research Domain
- Aging Research
- Cardiovascular
- Developmental Biology
- Metabolic Research
- Motor Function
- Toxicology
Compatible Tracking Software
- ConductVision
Weight
- 21.0 kg
Dimensions
- L: 43.2 mm
- W: 38.0 mm
- H: 27.9 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Flow Velocity Range | 4-35 cm/s with electronic control | Many entry-level systems offer narrower velocity ranges or manual flow adjustment | Wide velocity range accommodates both juvenile and adult zebrafish across different swimming capabilities and experimental protocols. |
| Test Section Length | 30 cm transparent chamber | Shorter test sections common in basic models | Extended test length allows better flow development and reduces wall effects on swimming behavior measurements. |
| Water Capacity | 10-liter system volume | Smaller systems often use 3-5 liter capacities | Larger volume provides better temperature stability and water quality maintenance during extended testing protocols. |
| Flow Control System | AC motor with electronic controller | Basic systems may use manual valve control or simple variable speed drives | Electronic control enables precise velocity adjustment and programmable flow protocols for standardized testing procedures. |
| Chamber Design | Rectangular tank with tunnel-shaped test section | Some systems use circular flumes or simple rectangular chambers throughout | Tunnel design creates optimal flow characteristics while the buffer tank ensures stable circulation and easy fish handling. |
This swim tunnel combines a wide velocity range with electronic flow control and optimized chamber geometry. The 30 cm test section length and 10-liter total capacity provide stable experimental conditions for comprehensive zebrafish swimming performance studies.
Practical Tips
Calibrate flow velocities using neutrally buoyant particles or dye injection at the center of the test section.
Why: Controller settings may not directly correspond to actual velocities due to propeller characteristics and system geometry.
Clean the propeller blades weekly and check for debris buildup that could affect flow generation.
Why: Propeller fouling reduces flow efficiency and creates turbulence that affects swimming performance measurements.
Allow fish to acclimate at minimum flow (4 cm/s) for 15-30 minutes before beginning velocity increases.
Why: Proper acclimation reduces stress responses that could confound swimming performance measurements.
Record water temperature, dissolved oxygen, and pH at the start and end of each swimming trial.
Why: Water quality changes during extended protocols can affect fish performance and experimental repeatability.
If fish repeatedly sink or float rather than swimming, check water density and fish buoyancy control.
Why: Improper buoyancy prevents normal swimming behavior and invalidates performance measurements.
Ensure electrical connections are properly grounded and keep water away from the motor controller.
Why: Water and electrical systems require proper safety precautions to prevent equipment damage and ensure operator safety.
Test individual fish rather than groups to avoid schooling effects on swimming behavior.
Why: Schooling can artificially enhance swimming performance and create variability in individual capacity measurements.
Verify flow uniformity across the test section width and height before beginning experiments.
Why: Non-uniform flow creates zones of different swimming challenge that compromise standardized performance assessment.
Setup Guide
What’s in the Box
- Swim tunnel apparatus with 10L tank
- AC motor and propeller assembly
- Electronic flow controller
- Power cable and connectors
- User manual with setup instructions (typical)
- Flow calibration guide (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, along with technical support for setup and operation procedures.
Compliance
What is the optimal flow velocity progression for critical swimming speed determination?
Start at 4 cm/s and increase by 2-3 cm/s increments every 10-15 minutes until fish can no longer maintain position. The electronic controller allows precise velocity adjustments throughout this protocol.
How should water temperature be controlled during experiments?
Maintain water temperature at 26-28°C using external heating/cooling as needed. The 10-liter volume provides good thermal stability, but monitor temperature throughout extended protocols.
What fish density is appropriate for testing protocols?
Test individual fish or small groups (2-3) to avoid schooling effects on swimming behavior. The 30 cm test section provides adequate space for single fish critical swimming speed assessment.
How is flow uniformity verified across the test section?
Use particle tracking or dye visualization to confirm laminar flow throughout the 30 cm test length. The tunnel design minimizes edge effects and flow variations.
What maintenance is required for consistent performance?
Clean the propeller and test section weekly, calibrate flow velocities monthly, and replace water regularly to prevent algae growth that could affect flow characteristics.
Can the system accommodate different experimental temperatures?
Yes, but external temperature control is required. The system operates effectively across typical zebrafish temperature ranges when proper water conditioning is maintained.
How do I determine when a fish has reached exhaustion?
Monitor for inability to maintain position against the current for more than 10 seconds. Fish will be swept to the rear of the chamber when swimming capacity is exceeded.
What is included with the Zebrafish Swim Tunnel?
The Zebrafish Swim Tunnel ships with the swim tunnel unit, two electronic control boxes, and a USB drive containing installation software and hardware/software manuals.
Is installation support available for the Zebrafish Swim Tunnel?
Yes. Most customers set up the system using the included hardware manual and installation guide (provided on the USB drive). If additional help is needed, we offer 24/7 virtual support throughout the lifetime of your order, including video calls to walk through setup and operation.
Is assembly support available for the swim tunnel?
Yes. The swim tunnel comes with hardware and software manuals on a USB drive. Additionally, we offer 24/7 virtual support throughout the lifetime of your order. Our engineering team can meet with you virtually to assist with setup, operation, and troubleshooting.
Can I use video tracking software with the swim tunnel?
Yes. You can operate the tunnel using the included standard software package, or pair it with a video tracking system for advanced analysis. ConductVision, our AI-powered tracking software, is designed to work with the swim tunnel and can track fish location, swimming speed, and distance travelled, with support for tracking 15+ fish simultaneously at 30 fps with 95%+ accuracy.
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