Koi Fish Health Checklist – 7 Signs Your Koi is Thriving
Koi Fish Health Checklist – 7 Signs Your Koi is Thriving
Healthy Koi
A healthy koi is a happy koi! But how can you tell if your fish is in peak condition—or if something’s wrong? This quick health checklist will help you monitor your koi’s well-being.
Signs of a Healthy Koi:
- Active Swimming: Moves smoothly and energetically.
- Bright Colors: Vibrant, unblemished scales.
- Clear Eyes: No cloudiness or swelling.
- Healthy Appetite: Eats eagerly during feeding times.
- Smooth Gills: No rapid breathing or redness.
Warning Signs of Illness:
- Lethargy: Hiding or floating listlessly.
- Faded Colors: Dull or patchy scales.
- Rapid Gill Movement: Could indicate poor water quality.
- White Spots or Flashing: Possible parasites (like Ich).
- Clamped Fins: Fins held close to the body.
Quick Tips for Prevention:
– Test water quality regularly (ammonia, nitrites, pH).
– Quarantine new fish before introducing them.
– Feed a high-quality diet for immune support.
Catching issues early can save your koi’s life. Need help? Contact our experts at Legacy Koi here!

