Hello everyone I have 4 dwarf gourami?s aswell other small fish. I noticed yesterday one of them has a bent spine he?s eating and swimming but looks odd I?m praying it?s not tb. The water parameter is fine and the fish was brought from a local aquatic centre near me I?ve included a pic.
The tank is 180l is been running for about 5 months there are four dwarf gourami?s some platys Mollies and guppys with a few corys in total about 17 fish. Ammonia and nitrite is 0 nitrate is 20 ppm tap is currently 5.0ppm working on that and ph 7.4 and water is fairly hard.
That all sounds fine apart from the possibility that the water is a bit too hard for the gouramis and cories, but that wouldn't cause this problem.
Fish TB (mycobacteriosis) is quite rare and would affect other fish too so I doubt it's that.
The most likely cause of the problem is an iridovirus called Dwarf Gourami Disease. Most DG's sold in the UK come from massive breeding farms in the Far East and the bulk of them are infected with this disease. You may see other symptoms such as wasting, bloat and sores as it progresses. There is no cure so it may be kinder to put him to sleep