For the past couple of weeks, my Birchir (of unknown species) has began to curl up and swim without the use of his fins, causing him to swim quickly into glass, rocks and all sorts of things on the tank. It seems he can't straighten his body, and it hasn't seemed to get amy better. Any ideas, feel free to ask questions?
And what do you think is the most humane thing to do?

And what do you think is the most humane thing to do?
