I had an angel died post two days after witnessing some scales discolouration. This happened on 26th April.
I thought itís due to some desease and changed water (60% of total capacity), then it was okay for some weeks until I lost two of my dwarf gouramis on 25th May with same symptoms.
Photos attached for your valuable inspection.
Iím worried about the rest of the occupants.
Tank conditions mentioned below:-
76Ltr tank with original plants, 20% water changing in every two months.
Tank is going to be on year old.
Please help !!!