I truly hope someone can help... I've got a red dwarf gourami that started to go back and forth 2 days ago and that never stops now. It is in a corner moving back and forth like crazy and stopped eating. It's the only fish doing it. PH is 7.2, ammonia 0, nitrite 0, nitrate 5ish, I do pwc
25% every week or so and the population consists of neons, gouramis, rasboras and a algea eater. I lost another one just like that 1 month ago ..... No trace of ick or fungal desease no other symptom....
Does anyone have an idea of what is happening?