Fin Rot
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About this condition
A bacterial infection (commonly Columnaris) that causes fins to dissolve and fray. Poor water quality or physical injury often triggers it; early detection is key to recovery.
Common symptoms
- Fin tips turn white
- Fins dissolve or tear
- Redness in fins and gills
- Condition progresses to body surface in severe cases
Common causes
- Bacterial infection (such as Columnaris bacteria)
- Water quality deterioration
- Overcrowding in tank
- Physical damage to fins
Prevention (husbandry & daily care)
Regular water changes, avoid overcrowding, proper filter maintenance.
Related species guide
→ Browse the species guide for this animalWhen to see a vet
Consider consulting a specialist store within a few daysWhat can a specialist store do?
A veterinarian or specialist will assess the causative bacteria and severity, then advise on an appropriate treatment plan. For severe cases, guidance on isolation and intensive water quality management is provided.
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Other conditions in this animal
Ich (White Spot Disease)Consider consulting a specialist store within a few daysCotton Wool Disease (Saprolegnia)Monitor; consult a specialist store if it worsensAeromonas InfectionConsult a specialist store or experienced keeper promptlyDropsyConsult a specialist store or experienced keeper promptlyVelvet Disease (Oodinium)Consult a specialist store or experienced keeper promptlySwim Bladder DisorderMonitor; consult a specialist store if it worsensPop-Eye (Exophthalmia)Consider consulting a specialist store within a few daysNeon Tetra DiseaseConsult a specialist store or experienced keeper promptlyHole-in-the-Head Disease (Hexamita / HLLE)Consider consulting a specialist store within a few daysAnchor Worm (Lernaea)Consider consulting a specialist store within a few daysGill Fluke (Monogenean Infection)Consider consulting a specialist store within a few days