1. Overview
The ZURU Robo Fish is a water-activated robotic toy designed to mimic the swimming motions of a real fish. It features multi-directional swimming capabilities and changes color upon contact with water, providing an engaging play experience. This manual provides essential information for the safe and proper use of your Robo Fish.

Image: A pink ZURU Robo Fish, showcasing its design and vibrant color.
2. What's Included
- 1 x ZURU Robo Fish
- 2 x Unknown Batteries (pre-installed)
3. Setup
Your ZURU Robo Fish comes with batteries pre-installed. If replacement is needed, follow these steps:
- Locate the battery compartment on the underside of the fish.
- Using a small screwdriver (not included), carefully open the battery compartment.
- Remove the old batteries and insert two new batteries, ensuring correct polarity (+/-).
- Securely close the battery compartment with the screwdriver to maintain water resistance.

Image: A blue ZURU Robo Fish displayed in its clear plastic packaging, ready for unboxing and setup.
4. Operation
The ZURU Robo Fish is designed for simple, water-activated operation:
- Activation: Gently place the Robo Fish into water. It will automatically begin to swim.
- Movement: The fish is programmed to swim in 5 different directions, simulating realistic fish movement.
- Color Change: Some models of the Robo Fish feature a color-changing ability. This effect is activated when the fish is immersed in water.
- Deactivation: Remove the Robo Fish from the water. It will automatically stop swimming.

Image: An orange ZURU Robo Fish, designed to look like a clownfish, demonstrating the variety of available models.
5. Maintenance
- After each use, rinse the Robo Fish with clean, fresh water.
- Thoroughly dry the fish, especially the battery compartment and any exposed sensors, to prevent corrosion and ensure longevity.
- If the toy will not be used for an extended period, remove the batteries to prevent leakage and damage.
- Store the Robo Fish in a dry place away from direct sunlight.
6. Troubleshooting
- Fish not swimming: Ensure the fish is fully immersed in water. Check that the battery compartment is securely closed and that the batteries are correctly inserted and not depleted.
- Fish not changing color: For models with color-changing features, ensure the fish is fully submerged in water. The color change is a reaction to water contact.
- Short battery life: Replace with new batteries. Ensure the battery compartment is dry before closing.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | ZURU |
| Model Number | ZU7125 |
| Material | Plastic |
| Power Source | Battery |
| Number of Batteries | 2 (Unknown type, included) |
| Operation Mode | Automatic (Water Activated) |
| Minimum Age | 36 Months |
| Item Dimensions (L x W x H) | 3.15 x 3.15 x 3.15 inches |
| Item Weight | 0.11 Pounds |
8. Safety Information
- Adult supervision is recommended for very young children during play.
- This toy contains small parts and is not suitable for children under 36 months (3 years) due to choking hazards.
- Ensure the battery compartment is always securely sealed to prevent water ingress and potential electrical hazards.
- Do not attempt to open or modify the toy beyond battery replacement.
9. Warranty and Support
For warranty information or product support, please refer to the packaging or contact ZURU customer service directly. Keep your purchase receipt for any warranty claims.
You can visit the official BANDAI Store for more products and information.