Hello Everyone,
I have 1 pearl gourami, 1 male dwarf gourami, and 2 male gold gouramis in a 36 gallon tank for over a year.
The pearl gourami has given me some concern because he has been getting thin, and his colors have been fading. He is still eating but slower than before. There has been no sign of fellow gouramis bullying him. Is it possible that he might have internal parasites or bacterial infection?
All the gouramis have not been through any medication before since I got them. If there is a possible disease, should I treat the whole tank or isolate the sick one? Should all of them be medicated to ensure they are clean from possible parasites or bacterial infections to prevent future issues?
If I need to treat them with medication I am planning on using API General Cure or API E.M. Erythromycin.
Water Parameters using Terta Ammonia & 6-in-1 Test Strips
Ammonia: 0
Nitrite: 0
Nitratre: <20
PH: 8.4
GH: 25
Chlorine: 0
KH: 300
Water Temp: 76
Thank you in advance for your help and advice!
