The long stringy white poop.
Hexamita is a flagellated protozoan disease which is often confused with Spironucles.
White stringy faces is classic symptom of Hexamita.
Infected fish lose their appetite.
If internal organs are affected, particularly the liver & kidneys and thus show signs of dropsy.
Occasionally swimming abnormalities can occur if brain becomes infected.
Isolate the sick fish and treat it in a hospital tank.
One teaspoon for every 5 liters of water for the first day and one teaspoon every 2 days.
Strong aeration is recommended.
Treatment may last for 5 days.
Shake well before applying.