Very skinny weather loach
I am sorry for not providing a picture, but I will try to be as detailed as possible. I have had my two weather loaches for 5 years, the one is perfectly healthy, full of energy, and a bit chunky. My second loach was always smaller in size and width, but suddenly it became really skinny and had a weird posture. At first I thought it was dead, but turns out it wasn't, it still breaths, swims, and eats, but is almost not active at all, lying at the bottom. If I described it, I would say it's like a zombie. This has been going on for almost a month, and I have been very busy with my exams, but I still looked out for my tank. I thought it would get better, but it's the same.Does anyone know what might cause this ?Any advice is appreciated! Thank you!