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Swim Bladder Disorder

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Medaka

About this condition

A disorder of the swim bladder causing fish to float upside-down or on their side and lose the ability to swim normally. Digestive problems or congenital abnormalities may be the underlying cause.

Common symptoms

  • Floating upside down
  • Tilting sideways
  • Sinking and unable to move
  • Unable to swim normally

Common causes

  • Indigestion
  • Swim bladder abnormality
  • Sudden water temperature changes
  • Overeating

Prevention (husbandry & daily care)

Proper portion sizes, stable water temperature, easily digestible food.

Related species guide

Browse the species guide for this animal

When to see a vet

Monitor; consult a specialist store if it worsens

What can a specialist store do?

A veterinarian will assess the swim bladder and digestive system, provide guidance on improving husbandry, and offer supportive care as needed. If no improvement is seen, consultation with a specialist is recommended.

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