I have a 85l tropical aquarium with cherry barbs, couple of clown loach, some white cloud mountain minnows.
I also have/had 5 African banded barbs now I only have one left and he looks pretty sick,
The ill fish is having trouble breathing and has become thin and pale with a redness around the gills. The others died over a year or so but had the same symptoms.
I tried methylene blue but it hasn't stopped this problem.
The pH is 7.4 and nh3
is 0mg there is good air with pump filter and an air stone
ANY IDEAS WHAT'S GOING ON WITH THIS FISH.