Saprolegnia

What is Saprolegnia?
Saprolegnia (SAP) is not an aquatic fungus, it is a Protist that is often mistaken for a fungus. It is commonly found in aquariums, particularly where there is an abundance of decaying organic matter. This can be confused with Columnaris.

Saprolegnia is spread by spores through the air and causes fungal infections in injured or sick fish or amphibians, and often attacks eggs, killing them before they can hatch.


 * This fungus spreads and eventually kills the animal.

Causes

 * Damaged skin or fins.
 * Bacteria infections which leads to further skin and fin damage.

This fungus is often seen after fin-rot or skin damage has appeared and is called cotton-wool disease due to it's fluffy white or grey appearance.

Treatments

 * Malachite green.
 * Methylene Blue.
 * Potassium Permanganate is an effective treatment at the early stages of infection.
 * Tincture of Metaphen (tincture of nitromersol)
 * Remove fish from aquarium and directly apply drops of 3% Hydrogen peroxide or spray with Terbinafine Hydrochloride (Lamisil AT foot spray) (see image) to the area of the wound for 30 seconds. Repeat daily.

(please add more if you know of any)
 * Some species of this fungus are tolerant to brackish water so salt may not be an effective treatment in advanced cases.
 * King British - Bacteria Control claims to kill bacteria which leads to this disease.
 * King British - Fin Rot & Fungus Control claims to treat this disease.
 * King British - Methylene Blue claims to treat this disease.
 * Interpet - No.8 Anti Fungus and Finrot claims to kill this fungus

Links

 * Fish fungus - Saprolegnia
 * Wikipedia
 * Saprolegnia - Water Fungus - by R.E. Carlson
 * SAPROLEGNIA: THERE’S A FUNGUS AMONG US