Hey all! First post. Ive had a blue crayfish for almost 3 years now. During her last moult she had issues getting her claw out. Her one claw is now deformed and she grew a brown spot on her tail. It looks like rust to me. Will attach photos. Went to feed her this morning and I spooked her, which never happens as she seen me coming because her claws were up and barred. Once I opened the lid she took off like I scarred her so she ended up on her back. She struggled and couldn't get up. Of course being the mom I am, got her back up. As I was typing this I heard a noise and looked up, she's on her side struggling to get up.
Is the brown spot, assuming its shell rot from what Ive been reading, attributing to her being able to stay afloat? She is older so I understand she's dying. Her moults are maybe once a year.
Water parameters are:
8.2ppm for PH
0ppm for nitrates
0ppm for nitrites
0ppm for ammonia
Im thinking/hoping its just age and to make her as comfy as I can. Any help/advice is appreciated!!