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Brown Jelly Disease

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Marine Fish & Coral

About this condition

A disease where coral tissue dissolves into a brown, jelly-like mass, often triggered by protozoan infection or physical damage. Large-polyp stony corals (LPS) are most commonly affected.

Common symptoms

  • Brown gelatinous mucus on coral surface
  • Tissue dissolution
  • Foul odor
  • Occurs frequently in LPS corals

Common causes

  • Protozoan infection
  • Water quality deterioration
  • Physical damage
  • Stress

Prevention (husbandry & daily care)

Maintain water quality, prevent coral-to-coral contact, regular observation for early detection.

Related species guide

Browse the species guide for this animal

When to see a vet

Consult a specialist store or experienced keeper promptly

What can a specialist store do?

Consultation with a specialist aquarist experienced in coral care is recommended. Advice on isolation procedures and tank stabilization to prevent the spread of infection can be obtained.

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