Swimming sideways in Silver Arowanas is a serious issue often indicating a health crisis. It can be life-threatening if not addressed promptly. Owners should immediately check water parameters, diet, and behavior changes.
Silver Arowana Swimming Sideways: Common Causes
Poor Water Quality
Most LikelyHigh ammonia or nitrite levels can cause swim bladder dysfunction.
Internal Parasites
Most LikelyParasites like tapeworms can affect the swim bladder, leading to sideways swimming.
Infection
PossibleBacterial or fungal infections can disrupt the swim bladder's function.
Poor Diet
PossibleInsufficient nutrition or overfeeding can lead to swim bladder issues.
Stress
Less CommonStress from tank mates or environmental changes can cause temporary swimming abnormalities.
How to Diagnose the Cause
Follow these steps in order. Stop when you identify a likely cause and move to treatment.
- Perform a visual inspection of the tank and the fish for signs of injury or disease.
Check for external parasites, fin rot, or ulcers.
- Test the water for ammonia, nitrite, nitrate, pH, and temperature.
Ensure all parameters are within the optimal range for Silver Arowanas.
Recommended: Water test kit - Check the diet and feeding schedule of the fish.
Ensure a balanced diet is provided and avoid overfeeding.
- Observe the fish's behavior and interactions with tank mates.
Look for signs of stress or aggression.
- Consider performing a physical examination if possible.
A vet can check for internal issues that may not be visible externally.
Recommended: Vet examination
How to Treat Silver Arowana Swimming Sideways
- Improve water quality by changing 25-30% of the tank water daily and adding water conditioner.
Ensure the tank water is well-oxygenated and free of harmful chemicals.
- Administer appropriate medication for internal parasites if diagnosed.
Follow the vet's instructions for dosage and treatment duration.
- Treat infections with antibiotics or antifungal medications as prescribed by a vet.
Ensure the medication is suitable for Silver Arowanas.
- Adjust the diet to include high-quality, easily digestible foods and reduce feeding frequency if necessary.
Monitor the fish's weight and health closely.
- Reduce stress by ensuring the tank is well-decorated and providing hiding spots.
Remove any aggressive tank mates or sources of stress.
How to Prevent Silver Arowana Swimming Sideways
When to See a Vet
🔬 AI Symptom Checker
Not sure what's wrong? Describe your fish's symptoms to the FishCare AI and get an instant diagnosis.
Check Symptoms →Frequently Asked Questions
This guide was reviewed for biological accuracy and practical aquarium care guidance. Always test water parameters before treating a sick fish — poor water quality is the most common root cause. Consult an aquatic veterinarian if symptoms persist after 48 hours of correct treatment.
Sources: Merck Veterinary Manual — Aquarium Fishes · UF/IFAS Extension — Fish Health Management