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Fin rot (fin rot)

Progressive deterioration of the fins caused by bacteria. The fins become frayed and shorten. Almost always linked to poor water quality.

Detailed explanation

The responsible bacteria are normally present in water and become pathogenic only when the fish's immune system is compromised.

The best treatment is to improve water quality. In severe cases, antibiotics are used.

Bettas are particularly susceptible to their long, delicate fins. If the rot reaches the base of the fin the damage can be permanent.

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