Hi I have a question regarding my male platy.
He tends to mope in a corner or lay on the bottom under my bridge ornament. His tail which used to be normal and slightly fanned is now gone kind of smaller and pointy! He is still eating and I cant see any fungus. Ive done water tests and everything seems fine.
My tank is about 100 litres and contains 1 male platy, 2 female platys, 1 male molly, 3 female mollies and 2 glowlight tetras.

Its almost as if hes paralysed his tail because he moves his body as oposed to his tail when he swims. His back half is more faded today in colour as well. any ideas/suggestions!?