How unfortunate for you, M.Kotzulla, thats sad.
I can only add a little to what has already been said.
I have recently bought the spirohexol tablets from the link Big Tom has posted SeahorseAquarium, – I have had correspondance with them not so long ago. They can still supply these tablets, but they will unfortunately run out.
They actually also said they would contact the jbl representative so I might have had some contact with them regarding the medicine, but this never happened. Maybe if someone else from UK would contact them and ask or explain our situation and our understanding of the tablets, they would be willing to take contact to JBL. Its really unfortunate that they have stopped.
I have tried the liquid, its not good.
I would recommend that anyone with parosphromenus buy some of these tablets if you can get hold on them. If you have them in the refrigerator they will last some time. I have 3 bottles now, and I do use them now and again.
I would also say, as Peter, – it may or may not be odinium. It sounds like a heavy attact to develop so quick, – however, I have had fish that suddenly was really infected, – but I would never have called that in a ‘fungus’ kind of way. Its like a heavy blanket of small particles, not fungus like … so I am not quite sure about the diagnosis here.
I have however experienced that even heavily infected fish (with odinium) respond well to the spirohexol. Lastly I had some very small fry, that I suddenly discovered was quite attacted. I will post some photos here. They all recovered and are well.
Just adding that the six I bought recently (supposed to be from the same batch as Kotzulla’s) are all fine, in fact they are quite lively and well.
Sometimes with wild caught fish the travel can make the difference, meaning how long they stay under stressfull conditions (bags somewhere, cold temperatures etc)