Ammonia-0, Nitrite-0, Nitrate-5ppm, salinity is kept at 1.006 to 1.010. The tank is 64L (UK based so don't know gallons, sorry) and she is the only inhabitant. She is fed every other day on mixed seafood so prawns, mussels, squid etc and once a week she gets a few small snails that we cultivate in our other freshwater tank. Been with us now for around two and a half years and is probably two inches long, maybe a little less. Also we have no idea if "she" is actually a she or not but we liked the name Dotty so have always referred to her as she!
So for the past few days we have noticed a change in her behaviour, she has been hiding away much more than usual and has become quite shy. She also appears to be a bit disoriented and bumps into things. At first we thought she may have somehow gone blind but she can definitely see. She is also swimming strangely with her head facing the bottom sometimes almost vertical always head down and swimming in circles ...almost like a dog does when chasing their tail. Her colouring has always been amazingly bright but she seems to have faded and is looking quite washed out and much more grey in colour this morning when I checked in her she was just still on the bottom..... I thought she had gone but she did start to swim a little as she saw me in the room. We are so worried and have no idea what could be wrong....does anyone have any advice please? Thankyou so much
![[welcome]](./images/smilies/welcome.gif "welcome")
