Silver Arowana — Not Eating
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🔍 Monitor · behavioral

Why Is My Silver Arowana Not Eating?

Osteoglossum bicirrhosum
🐟 Species: Silver Arowana
🔬 Problem: Not Eating
📋 Category: behavioral
⚡ Urgency: monitor

Not eating is a common issue in Silver Arowanas due to their solitary nature and cautious behavior. It can be serious if it persists for extended periods, as it can lead to malnutrition. Owners should first ensure the water quality is optimal and diet is appropriate.

Common Causes of Not Eating in Silver Arowana

Poor Water Quality

Most Likely

Unstable parameters such as pH and temperature can stress the fish and cause it to stop eating.

Dietary Issues

Possible

Feeding inappropriate food, overfeeding, or not offering a varied diet can lead to a loss of appetite.

Stress or Trauma

Possible

Interruption of its solitary and cautious lifestyle, such as new tankmates or frequent water changes, can cause stress.

Disease

Possible

Signs of illness like fin rot, ich, or parasites can reduce appetite in Silver Arowanas.

Reproductive Cycle

Less Common

Female Arowanas may stop eating during their reproductive cycle, which can last several months.

How to Diagnose

Follow these steps in order. Stop when you identify a likely cause and move to treatment.

  1. Check water parameters

    Test the pH, temperature, ammonia, nitrite, and nitrate levels. Use an aquarium test kit.

    Recommended: test kit
  2. Observe the fish's behavior

    Note if it is hiding, losing color, or displaying other signs of stress.

  3. Examine the fish's appearance

    Look for signs of disease, such as spots on the body, or bloating.

  4. Evaluate the diet

    Assess if the diet is varied and appropriate for the fish's needs. Consider changing brands or types of food if necessary.

  5. Assess tank conditions

    Ensure the tank is well-maintained, with no aggressive tankmates and appropriate tank size.

How to Fix It

  1. Improve water quality

    Perform regular water changes, stabilize pH, and adjust temperature to the fish's requirements.

  2. Adjust the diet

    Offer smaller, more frequent feedings of high-quality food, and vary the types of food to stimulate interest.

  3. Reduce stress

    Ensure the fish has a quiet, well-maintained environment and consider removing any aggressive tankmates.

  4. Treat for disease

    If disease is suspected, treat with appropriate medication. Consult a vet for the best course of action.

  5. Monitor progress

    Regularly check the fish's response to the changes made and adjust treatment accordingly.

Prevention

Regular water changes, maintaining optimal water parameters, providing a varied diet, and ensuring a stress-free environment can prevent not eating episodes in Silver Arowanas.

When to Seek Expert Help

See a vet if: If the fish does not eat for more than a week despite the changes, or if it shows signs of severe stress or illness, consult a vet immediately.

📖 Full Care Guide

Learn everything about keeping a healthy Silver Arowana — tank setup, water parameters, diet, tank mates, and disease prevention.

Silver Arowana Care Guide →

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Frequently Asked Questions

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Editorial review

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.